Citizendia

Francis Harry Compton Crick
Francis Harry Compton Crick
Francis Harry Compton Crick
Born8 June 1916
Weston Favell, Northamptonshire, England
Died28 July 2004 (aged 88)
San Diego, California, U.S.
Colon Cancer
ResidenceUK, U.S.
NationalityBritish
FieldsMolecular biologist, Physicist
InstitutionsSalk Institute
Alma materUniversity College London
University of Cambridge
Doctoral advisorMax Perutz
Doctoral studentsnone
Known forDNA structure, consciousness
Notable awards Nobel Prize (1962)
Religious stanceNone[1]

Francis Harry Compton Crick OM FRS (June 8, 1916July 28, 2004), Ph. Events 68 - The Roman Senate accepts emperor Galba. 536 - St Silverius becomes Pope (probable Year 1916 ( MCMXVI) was a Leap year starting on Saturday (link will display the full calendar of the Gregorian calendar (or a Leap year Weston Favell is a village and district of Northampton in the English county of Northamptonshire. Northamptonshire (or archaically the County of Northampton; abbreviated Northants England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland Events 1540 - Thomas Cromwell is executed at the order of Henry VIII of England on charges of Treason. "MMIV" redirects here For the Modest Mouse album see " Baron von Bullshit Rides Again " California ( is a US state on the West Coast of the United States, along the Pacific Ocean. The United States of America —commonly referred to as the The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located The United States of America —commonly referred to as the The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located Molecular biology is the study of Biology at a molecular level Physics (Greek Physis - φύσις in everyday terms is the Science of Matter and its motion. Salk Institute2jpg|thumb|right|200px|Salk Institute]]The Salk Institute for Biological Studies is an independent non-profit scientific research institute located in La Jolla California Alma mater is Latin for "nourishing mother" It was used in Ancient Rome as a title for the mother Goddess, and in Medieval University College London ( UCL) is a multi-faculty university institution based in the United Kingdom and a constituent college of the University of London The University of Cambridge (often Cambridge University) located in Cambridge, England, is the second-oldest university in the A doctorate is an Academic degree that indicates the highest level of academic achievement Max Ferdinand Perutz, OM ( May 19 1914, Vienna, Austria – February 6 2002, Cambridge, Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known Consciousness has been defined loosely as a constellation of attributes of Mind such as Subjectivity, Self-awareness, Sentience, and the The Nobel Prize in Physiology or Medicine (Nobelpriset i fysiologi eller medicin is awarded once a year by the Swedish Karolinska Institute. The Order of Merit is a British and Commonwealth Order bestowed by the Monarch. Events 68 - The Roman Senate accepts emperor Galba. 536 - St Silverius becomes Pope (probable Year 1916 ( MCMXVI) was a Leap year starting on Saturday (link will display the full calendar of the Gregorian calendar (or a Leap year Events 1540 - Thomas Cromwell is executed at the order of Henry VIII of England on charges of Treason. "MMIV" redirects here For the Modest Mouse album see " Baron von Bullshit Rides Again " D. , was an English molecular biologist, physicist, and neuroscientist, and most noted for being one of the co-discoverers of the structure of the DNA molecule in 1953. England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland Molecular biology is the study of Biology at a molecular level Physics (Greek Physis - φύσις in everyday terms is the Science of Matter and its motion. Neuroscience is a field devoted to the scientific study of the nervous system Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known In Chemistry, a molecule is defined as a sufficiently stable electrically neutral group of at least two Atoms in a definite arrangement held together by He, James D. Watson and Maurice Wilkins were jointly awarded the 1962 Nobel Prize for Physiology or Medicine "for their discoveries concerning the molecular structure of nucleic acids and its significance for information transfer in living material" . Maurice Hugh Frederick Wilkins CBE FRS ( 15 December 1916 – 5 October 2004) was a New Zealand -born British The Nobel Prize in Physiology or Medicine (Nobelpriset i fysiologi eller medicin is awarded once a year by the Swedish Karolinska Institute. Molecular geometry or molecular structure is the three- Dimensional arrangement of the Atoms that constitute a Molecule. A nucleic acid is a Macromolecule composed of chains of monomeric Nucleotides In Biochemistry these Molecules carry Genetic information [2]

His later work, until 1977, at the MRC Laboratory of Molecular Biology, has not received as much formal recognition. The Medical Research Council (MRC is a UK organisation dedicated to "promot the balanced development of medical and related biological research The Laboratory of Molecular Biology (or LMB) is a research institute in Cambridge England, which was at the forefront of the revolution in Molecular biology Crick is widely known for use of the term “central dogma” to summarize an idea that genetic information flow in cells is essentially one-way, from DNA to RNA to protein. The central dogma of molecular biology was first enunciated by Francis Crick in 1958 and re-stated in a Nature paper published in 1970 The cell is the structural and functional unit of all known living Organisms It is the smallest unit of an organism that is classified as living and is often called Ribonucleic acid ( RNA) is a Nucleic acid that consists of a long chain of Nucleotide units Proteins are large Organic compounds made of Amino acids arranged in a linear chain and joined together by Peptide bonds between the Carboxyl Crick was an important theoretical molecular biologist and played an important role in research related to revealing the genetic code. Molecular biology is the study of Biology at a molecular level The genetic code is the set of rules by which information encoded in genetic material ( DNA or RNA sequences is translated into Proteins [3]

During the remainder of his career, he held the post of J. W. Kieckhefer Distinguished Research Professor at the Salk Institute for Biological Studies in La Jolla, California. Salk Institute2jpg|thumb|right|200px|Salk Institute]]The Salk Institute for Biological Studies is an independent non-profit scientific research institute located in La Jolla California La Jolla (ləˈhɔɪə "luh-HOY-uh") is a wealthy Seaside resort community of up to 42808 residents within the city of San Diego, California His later research centered on theoretical neurobiology and attempts to advance the scientific study of human consciousness. Neurobiology is the study of cells of the Nervous system and the organization of these cells into functional circuits that process information and mediate behavior He remained in this post until his death; "he was editing a manuscript on his death bed, a scientist until the bitter end" said Christof Koch[4]. Christof Koch (born November 13, 1956, Kansas City) is an American neuroscientist working on the neural basis of Consciousness

Contents

Biography, family and education

Stained glass window in the dining hall of Caius College, in Cambridge, commemorating Francis Crick and representing the structure of DNA.
Stained glass window in the dining hall of Caius College, in Cambridge, commemorating Francis Crick and representing the structure of DNA. Gonville and Caius College Cambridge is a constituent College of Cambridge University, one of the world's most academically respected institutions Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known

Francis Crick, the first son of Harry and Annie Elizabeth Crick (nee Wilkins), was born and raised in Weston Favell, then a small village on the edge of the English town of Northampton in which Crick’s father and uncle ran the family’s boot and shoe factory. Weston Favell is a village and district of Northampton in the English county of Northamptonshire. England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland This article is about Northampton in England for other places of the same name see Northampton (disambiguation Northampton ( is a large Market At an early age, he was attracted to science and what he could learn about it from books. Science (from the Latin scientia, meaning " Knowledge " or "knowing" is the effort to discover, and increase human understanding As a child, he was taken to church by his parents, but by about age 12 he told his mother that he no longer wanted to attend. [5] Crick preferred the scientific search for answers over belief in any dogma. He was educated at Northampton Grammar School (now Northampton School For Boys) and, after the age of 14, Mill Hill School in London (on scholarship), where he studied mathematics, physics, and chemistry. This article is about Northampton in England for other places of the same name see Northampton (disambiguation Northampton ( is a large Market Northampton School for Boys ( NSB) is a Secondary school in Northampton, England. Mill Hill School, in Mill Hill, London, is a Coeducational Independent school for boarding and day pupils aged 13&ndash18 Mathematics is the body of Knowledge and Academic discipline that studies such concepts as Quantity, Structure, Space and Physics (Greek Physis - φύσις in everyday terms is the Science of Matter and its motion. Chemistry (from Egyptian kēme (chem meaning "earth") is the Science concerned with the composition structure and properties At the age of 21, Crick earned a B.Sc. degree in physics from University College London (UCL) [5] after he had failed to gain his intended place at a Cambridge college, probably through failing their requirement for Latin; his contemporaries in British DNA research Rosalind Franklin and Maurice Wilkins both went up to Cambridge colleges, to Newnham and St. John's respectively. A Bachelor of Science ( BS, BSc or BSc in the UK; less commonly S University College London ( UCL) is a multi-faculty university institution based in the United Kingdom and a constituent college of the University of London The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known Rosalind Elsie Franklin ( 25 July, 1920 Notting Hill, London – 16 April, 1958 Chelsea London) was an Maurice Hugh Frederick Wilkins CBE FRS ( 15 December 1916 – 5 October 2004) was a New Zealand -born British Newnham College is a Women's college in the University of Cambridge. St John's College, an institution known formally as The Master Fellows and Scholars of the College of St John the Evangelist in the University of Cambridge is a Crick later became a PhD student and Honorary Fellow of Caius College and mainly worked at the Cavendish Laboratory and MRC Laboratory of Molecular Biology in Cambridge. Gonville and Caius College Cambridge is a constituent College of Cambridge University, one of the world's most academically respected institutions The Cavendish Laboratory is the University of Cambridge 's Department of Physics, and is part of the university's School of Physical Sciences The Medical Research Council (MRC is a UK organisation dedicated to "promot the balanced development of medical and related biological research The Laboratory of Molecular Biology (or LMB) is a research institute in Cambridge England, which was at the forefront of the revolution in Molecular biology He was also an Honorary Fellow of Churchill College and of U. Churchill College is one of the constituent colleges of the University of Cambridge and was founded in 1958 as the national and Commonwealth memorial to Winston C. L. , London.

Crick began a Ph.D. research project on measuring viscosity of water at high temperatures (what he later described as "the dullest problem imaginable"[6]) in the laboratory of physicist Edward Neville da Costa Andrade, but with the outbreak of World War II - in particular, an incident during the Battle of Britain when a bomb fell through the roof of the laboratory and destroyed his experimental apparatus [7] - Crick was deflected from a possible career in physics. "PhD" redirects here for other uses see PhD (disambiguation. Viscosity is a measure of the resistance of a Fluid which is being deformed by either Shear stress or Extensional stress. Temperature is a physical property of a system that underlies the common notions of hot and cold something that is hotter generally has the greater temperature Edward Neville da Costa Andrade FRS ( December 27, 1887 - June 6, 1971) was an English Physicist, writer and World War II, or the Second World War, (often abbreviated WWII) was a global military conflict which involved a majority of the world's nations, including The Battle of Britain (German ''Luftschlacht um England'' is the name given to the sustained strategic effort by the German Luftwaffe during the summer and

During World War II, he worked for the Admiralty Research Laboratory, from which emerged a group of many notable scientists; he worked on the design of magnetic and acoustic mines and was instrumental in designing a new mine that was effective against German minesweepers. The Admiralty Research Laboratory, or ARL, was a research laboratory that supported the work of the UK Admiralty in Teddington, London, Electromagnetism is the Physics of the Electromagnetic field: a field which exerts a Force on particles that possess the property of A naval mine is a self-contained Explosive device placed in water to destroy Ships or Submarines Unlike Depth charges mines are deposited A minesweeper is a Naval Warship designed to counter the threat posed by Naval mines The dedicated purpose-built minesweeper first appeared during [8]

After World War II, in 1947, Crick began studying biology and became part of an important migration of physical scientists into biology research. Foundations of modern biology There are five unifying principles This migration was made possible by the newly won influence of physicists such as John Randall, who had helped win the war with inventions such as radar. Sir John Randall, FRSE, ( March 23, 1905 &ndash June 16, 1984) was a British Physicist, credited with radical Radar is a system that uses electromagnetic waves to identify the range altitude direction or speed of both moving and fixed objects such as Aircraft, ships Crick had to adjust from the "elegance and deep simplicity" of physics to the "elaborate chemical mechanisms that natural selection had evolved over billions of years. " He described this transition as, "almost as if one had to be born again. " According to Crick, the experience of learning physics had taught him something important—hubris—and the conviction that since physics was already a success, great advances should also be possible in other sciences such as biology. Crick felt that this attitude encouraged him to be more daring than typical biologists who tended to concern themselves with the daunting problems of biology and not the past successes of physics.

For the better part of two years, Crick worked on the physical properties of cytoplasm at Cambridge's Strangeways Laboratory, headed by Honor Bridget Fell, with a Medical Research Council studentship, until he joined Perutz and Kendrew at the Cavendish Laboratory. The cytoplasm is the contents of a cell that is enclosed within the Plasma membrane. The Medical Research Council (MRC is a UK organisation dedicated to "promot the balanced development of medical and related biological research Max Ferdinand Perutz, OM ( May 19 1914, Vienna, Austria – February 6 2002, Cambridge, Sir John Cowdery Kendrew ( 24 March 1917 &ndash 23 August 1997) was an English Biochemist and crystallographer The Cavendish Laboratory is the University of Cambridge 's Department of Physics, and is part of the university's School of Physical Sciences The Cavendish Laboratory at Cambridge was under the general direction of Sir Lawrence Bragg, a Nobel Prize winner in 1915 at the age of 25. The Cavendish Laboratory is the University of Cambridge 's Department of Physics, and is part of the university's School of Physical Sciences Sir William Lawrence Bragg CH, FRS, ( 31 March 1890 – 1 July 1971) was an Australian Physicist The Nobel Prize (Nobelpriset (Nobelprisen is a Swedish prize established in the 1895 will of Swedish chemist Alfred Nobel; it was first awarded in Peace, Literature Bragg was influential in the effort to beat a leading American chemist, Linus Pauling, to the discovery of DNA's structure (after having been 'pipped-at-the-post' by Pauling's success in determining the alpha helix structure of proteins). The United States of America —commonly referred to as the Linus Carl Pauling (February 28 1901 – August 19 1994 was an American Scientist, Peace activist, Author and educator. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known At the same time Bragg's Cavendish Laboratory was also effectively competing with King's College London, which was under Sir John Randall. The Cavendish Laboratory is the University of Cambridge 's Department of Physics, and is part of the university's School of Physical Sciences King's College London is a British Higher education institution and co-founding constituent college of the federal University of London. Sir John Randall, FRSE, ( March 23, 1905 &ndash June 16, 1984) was a British Physicist, credited with radical (Randall had turned down Francis Crick from working at King's College London. King's College London is a British Higher education institution and co-founding constituent college of the federal University of London. ) Francis Crick and Maurice Wilkins of King's College London were personal friends, which influenced subsequent scientific events as much as the friendship between Crick and James Watson. Maurice Hugh Frederick Wilkins CBE FRS ( 15 December 1916 – 5 October 2004) was a New Zealand -born British Crick and Wilkins first met at King's College London and not as erroneously reported at the Admiralty during World War II. The Admiralty was formerly the authority in the United Kingdom responsible for the command of the Royal Navy.

Crick died of colon cancer on 28 July 2004 at The University of California's San Diego Thornton Hospital, San Diego; he was cremated and his ashes scattered into the Pacific Ocean. Colorectal cancer, also called colon cancer or large bowel cancer, includes Cancerous growths in the colon, Rectum and Events 1540 - Thomas Cromwell is executed at the order of Henry VIII of England on charges of Treason. "MMIV" redirects here For the Modest Mouse album see " Baron von Bullshit Rides Again " The University of California ( UC) is a Public university system in the state of California. Cremation is the act of reducing a Corpse by burning, generally in a crematorium furnace or crematory fire The Pacific Ocean is the largest of the Earth 's Oceanic divisions A memorial service was held at The Salk Institute, La Jolla, near San Diego, California. Salk Institute2jpg|thumb|right|200px|Salk Institute]]The Salk Institute for Biological Studies is an independent non-profit scientific research institute located in La Jolla California [9]

Biology research

Francis Crick
Discovery of the DNA Double Helix

Francis Crick, lecturing ca. The Molecular structure of Nucleic Acids A Structure for Deoxyribose Nucleic Acid was an article published by James D 1979
William AstburyOswald Avery
Francis CrickErwin Chargaff
Jerry DonohueRosalind Franklin
Phoebus LeveneLinus Pauling
Erwin SchrödingerAlec Stokes
James WatsonMaurice Wilkins

Crick was interested in two fundamental unsolved problems of biology. William Thomas Astbury FRS (Bill Astbury 25 February, 1898 &mdash 4 June, 1961) was an English Physicist and Oswald Theodore Avery ( October 21, 1877 &ndash 2 February, 1955) was a Canadian -born American Physician and Erwin Chargaff ( Czernowitz, August 11, 1905 &ndash New York City, USA, June 20, 2002) was an Austrian Jerry Donohue ( June 12, 1920 &mdash February 13, 1985) was a theoretical and physical chemist Rosalind Elsie Franklin ( 25 July, 1920 Notting Hill, London – 16 April, 1958 Chelsea London) was an Phoebus Aaron Theodore Levene MD ( 25 February, 1869 &mdash 6 September, 1940) was a Russian-American Biochemist who studied the Linus Carl Pauling (February 28 1901 – August 19 1994 was an American Scientist, Peace activist, Author and educator. Alec Stokes ( Alexander Rawson Stokes, June 27 1919 – February 5 2003 was one of the key contributors in the original DNAa research team at King's College London Maurice Hugh Frederick Wilkins CBE FRS ( 15 December 1916 – 5 October 2004) was a New Zealand -born British Foundations of modern biology There are five unifying principles First, how molecules make the transition from the non-living to the living, and second, how the brain makes a conscious mind. In Chemistry, a molecule is defined as a sufficiently stable electrically neutral group of at least two Atoms in a definite arrangement held together by Life is a state that distinguishes Organisms from non-living objects such as non-life and dead organisms being manifested by growth through Metabolism The brain is the center of the Nervous system in animals All Vertebrates and the majority of Invertebrates have a brain MIND ( Moving In New Directions) (est 1975 is an alternative education high school in Montreal, Quebec, Canada. [10] He realized that his background made him more qualified for research on the first topic and the field of biophysics. Biophysics (also biological physics) is an Interdisciplinary Science that employs and develops theories and methods of the Physical sciences for It was at this time of Crick’s transition from physics into biology that he was influenced by both Linus Pauling and Erwin Schrödinger. Physics (Greek Physis - φύσις in everyday terms is the Science of Matter and its motion. Linus Carl Pauling (February 28 1901 – August 19 1994 was an American Scientist, Peace activist, Author and educator. [11] It was clear in theory that covalent bonds in biological molecules could provide the structural stability needed to hold genetic information in cells. Genetics (from Ancient Greek grc-Latn genetikos, “genitive” and that from grc-Latn genesis, “origin” a discipline of Biology, is It only remained as an exercise of experimental biology to discover exactly which molecule was the genetic molecule. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known [12][13] In Crick’s view, Charles Darwin’s theory of evolution by natural selection, Gregor Mendel’s genetics and knowledge of the molecular basis of genetics, when combined, reveal the secret of life. Charles Robert Darwin (February 12 1809 &ndash April 19 1882 was an English naturalist, who realised and demonstrated that all Species of life eVolution is the third Album by eLDee, it was due to be released in 2008 Natural selection is the process by which favorable Heritable traits become more common in successive Generations of a Population of Gregor Johann Mendel ( July 20, 1822 &ndash January 6, 1884) was [14]

It's clear that some macromolecule such as protein was likely to be the genetic molecule. The term macromolecule by definition implies "large Molecule " Proteins are large Organic compounds made of Amino acids arranged in a linear chain and joined together by Peptide bonds between the Carboxyl Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known [15] However, it was well known that proteins are structural and functional macromolecules, some of which carry out enzymatic reactions of cells. The term macromolecule by definition implies "large Molecule " Enzymes are Biomolecules that catalyze ( ie increase the rates of Chemical reactions Almost all enzymes are Proteins [15] In the 1940s, some evidence had been found pointing to another macromolecule, DNA, the other major component of chromosomes, as a candidate genetic molecule. The term macromolecule by definition implies "large Molecule " Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known A chromosome is an organized structure of DNA and Protein that is found in cells. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known Oswald Avery and his collaborators showed that a phenotypic difference could be caused in bacteria by providing them with a particular DNA molecule. Oswald Theodore Avery ( October 21, 1877 &ndash 2 February, 1955) was a Canadian -born American Physician and A phenotype is any observable characteristic of an Organism, such as its morphology, Development, biochemical or physiological properties The Bacteria ( singular: bacterium) are a large group of unicellular Microorganisms Typically a few Micrometres in length bacteria have Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known In Chemistry, a molecule is defined as a sufficiently stable electrically neutral group of at least two Atoms in a definite arrangement held together by [13]

An X-ray diffraction image for the protein myoglobin. At the time when Crick participated in the discovery of the DNA Double Helix, he was doing his thesis research on X-ray diffraction analysis of protein structure (see below).
An X-ray diffraction image for the protein myoglobin. At the time when Crick participated in the discovery of the DNA Double Helix, he was doing his thesis research on X-ray diffraction analysis of protein structure (see below).

However, other evidence was interpreted as suggesting that DNA was structurally uninteresting and possibly just a molecular scaffold for the apparently more interesting protein molecules. [16] Crick was in the right place, in the right frame of mind, at the right time (1949), to join Max Perutz’s project at Cambridge University, and he began to work on the X-ray crystallography of proteins. Max Ferdinand Perutz, OM ( May 19 1914, Vienna, Austria – February 6 2002, Cambridge, The University of Cambridge (often Cambridge University) located in Cambridge, England, is the second-oldest university in the X-ray crystallography is a method of determining the arrangement of Atoms within a Crystal, in which a beam of X-rays strikes a crystal and scatters [17] X-ray crystallography theoretically offered the opportunity to reveal the molecular structure of large molecules like proteins and DNA, but there were serious technical problems then preventing X-ray crystallography from being applicable to such large molecules. [17]

1949-1950

Crick taught himself the mathematical theory of X-ray crystallography. Mathematics is the body of Knowledge and Academic discipline that studies such concepts as Quantity, Structure, Space and X-ray crystallography is a method of determining the arrangement of Atoms within a Crystal, in which a beam of X-rays strikes a crystal and scatters During the period of Crick's study of X-ray diffraction, researchers in the Cambridge lab were attempting to determine the most stable helical conformation of amino acid chains in proteins (the α helix). X-radiation (composed of X-rays) is a form of Electromagnetic radiation. Diffraction is normally taken to refer to various phenomena which occur when a wave encounters an obstacle In Chemistry, an amino acid is a Molecule containing both Amine and Carboxyl Functional groups In Biochemistry, this A common motif in the Secondary structure of Proteins the alpha helix (α-helix is a right-handed coiled conformation resembling a spring, in which Pauling was the first to identify the 3. 6 amino acids per helix turn ratio of the α helix. Crick was witness to the kinds of errors that his co-workers made in their failed attempts to make a correct molecular model of the α helix; these turned out to be important lessons that could be applied, in the future, to the helical structure of DNA. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known For example, he learned the importance of the structural rigidity that double bonds confer on molecular structures which is relevant both to peptide bonds in proteins and the structure of nucleotides in DNA. Trans-2-butenesvg|right|thumb|Trans-2-butene]] In Chemistry, cis-trans isomerism or geometric isomerism or configuration isomerism is a form of A peptide bond is a Chemical bond formed between two Molecules when the Carboxyl group of one molecule reacts with the Nucleotides are Organic compounds that consist of three joined structures a nitrogenous base a Sugar, and a Phosphate group

Francis Crick's first sketch of the deoxyribonucleic acid double-helix pattern
Francis Crick's first sketch of the deoxyribonucleic acid double-helix pattern

1951-1953

In 1951, together with Cochran and V. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known William Gemmell Cochran ( 15 July 1909 – 29 March 1980) was a prominent statistician; he was born in Scotland but spent Vand, Crick assisted in the development of a mathematical theory of X-ray diffraction by a helical molecule. X-radiation (composed of X-rays) is a form of Electromagnetic radiation. Diffraction is normally taken to refer to various phenomena which occur when a wave encounters an obstacle [18] This theoretical result matched well with X-ray data obtained for proteins that contain sequences of amino acids in the Alpha helix conformation (published in Nature in 1952). Proteins are large Organic compounds made of Amino acids arranged in a linear chain and joined together by Peptide bonds between the Carboxyl In Chemistry, an amino acid is a Molecule containing both Amine and Carboxyl Functional groups In Biochemistry, this A common motif in the Secondary structure of Proteins the alpha helix (α-helix is a right-handed coiled conformation resembling a spring, in which Nature is a prominent Scientific journal, first published on 4 November 1869 [19] Helical diffraction theory turned out to also be useful for understanding the structure of DNA. Diffraction is normally taken to refer to various phenomena which occur when a wave encounters an obstacle Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known

Late in 1951, Crick started working with James D. Watson at Cavendish Laboratory at the University of Cambridge, England. The Cavendish Laboratory is the University of Cambridge 's Department of Physics, and is part of the university's School of Physical Sciences The University of Cambridge (often Cambridge University) located in Cambridge, England, is the second-oldest university in the England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland Using the X-ray diffraction results of Raymond Gosling and Rosalind Franklin of King's College London, given to them by Gosling and Franklin's colleague Maurice Wilkins, Watson and Crick together developed a model for a helical structure of DNA, which they published in 1953. X-ray crystallography is a method of determining the arrangement of Atoms within a Crystal, in which a beam of X-rays strikes a crystal and scatters Photo 51 is the nickname given to an X-ray diffraction image of DNA taken by Rosalind Franklin in 1952 that was critical evidence in identifying Raymond Gosling (born 1926 is a distinguished scientist who worked with both Maurice Wilkins and Rosalind Franklin at King's College London in deducing Rosalind Elsie Franklin ( 25 July, 1920 Notting Hill, London – 16 April, 1958 Chelsea London) was an King's College London is a British Higher education institution and co-founding constituent college of the federal University of London. Maurice Hugh Frederick Wilkins CBE FRS ( 15 December 1916 – 5 October 2004) was a New Zealand -born British Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known [20] For this and subsequent work they were jointly awarded the Nobel Prize in Physiology or Medicine in 1962 with Maurice Wilkins. The Nobel Prize in Physiology or Medicine (Nobelpriset i fysiologi eller medicin is awarded once a year by the Swedish Karolinska Institute. Maurice Hugh Frederick Wilkins CBE FRS ( 15 December 1916 – 5 October 2004) was a New Zealand -born British [21]

When James Watson came to Cambridge, Crick was a 35 year old post-graduate student (due to his work during WWII) and Watson was only 23, but he already had a Ph.D. "PhD" redirects here for other uses see PhD (disambiguation. They shared an interest in the fundamental problem of learning how genetic information might be stored in molecular form. [22][23] Watson and Crick talked endlessly about DNA and the idea that it might be possible to guess a good molecular model of its structure. [24] A key piece of experimentally-derived information came from X-ray diffraction images that had been obtained by Maurice Wilkins,Rosalind Franklin and their research student, Raymond Gosling. X-ray crystallography is a method of determining the arrangement of Atoms within a Crystal, in which a beam of X-rays strikes a crystal and scatters Maurice Hugh Frederick Wilkins CBE FRS ( 15 December 1916 – 5 October 2004) was a New Zealand -born British Rosalind Elsie Franklin ( 25 July, 1920 Notting Hill, London – 16 April, 1958 Chelsea London) was an Raymond Gosling (born 1926 is a distinguished scientist who worked with both Maurice Wilkins and Rosalind Franklin at King's College London in deducing In November 1951, Wilkins came to Cambridge and shared his data with Watson and Crick. Alexander Stokes (another expert in helical diffraction theory) and Wilkins (both at King's) had reached the conclusion that X-ray diffraction data for DNA indicated that the molecule had a helical structure - but Rosalind Franklin vehemently did not. Alec Stokes ( Alexander Rawson Stokes, June 27 1919 – February 5 2003 was one of the key contributors in the original DNAa research team at King's College London King's College London is a British Higher education institution and co-founding constituent college of the federal University of London. Stimulated by contact with Wilkins, and Watson attending a talk given by Rosalind Franklin about her work on DNA, Crick and Watson produced and showed off an erroneous first model of DNA. Rosalind Elsie Franklin ( 25 July, 1920 Notting Hill, London – 16 April, 1958 Chelsea London) was an Watson, in particular, thought they were competing against Pauling and feared that Pauling might determine the structure of DNA. Linus Carl Pauling (February 28 1901 – August 19 1994 was an American Scientist, Peace activist, Author and educator. [25]

Many have speculated about what might have happened had Pauling been able to travel to Britain as planned in May of 1952. Linus Carl Pauling (February 28 1901 – August 19 1994 was an American Scientist, Peace activist, Author and educator. The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located [26] He 'might' have been invited to see some of the Wilkins/Franklin X-ray diffraction data and such an event 'might' have led him to a double helix model (which remains (as said above) total speculation. Maurice Hugh Frederick Wilkins CBE FRS ( 15 December 1916 – 5 October 2004) was a New Zealand -born British Rosalind Elsie Franklin ( 25 July, 1920 Notting Hill, London – 16 April, 1958 Chelsea London) was an X-ray crystallography is a method of determining the arrangement of Atoms within a Crystal, in which a beam of X-rays strikes a crystal and scatters As it was, his political activities caused his travel to be restricted by the U. S. government and he did not visit the UK until later, at which point he met none of the DNA researchers in England. The federal government of the United States is the central United States Governmental body established by the United States Constitution. The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland [27] Watson and Crick were not officially working on DNA. Crick was writing his Ph.D. thesis. "PhD" redirects here for other uses see PhD (disambiguation. Watson also had other work such as trying to obtain crystals of myoglobin for X-ray diffraction experiments. Myoglobin is a single-chain globular Protein of 153 Amino acids containing a Heme ( Iron -containing Porphyrin) Prosthetic In 1952, Watson did X-ray diffraction on tobacco mosaic virus and found results indicating that it had helical structure. X-ray crystallography is a method of determining the arrangement of Atoms within a Crystal, in which a beam of X-rays strikes a crystal and scatters Tobacco mosaic virus (TMV is an RNA virus that infects Plants especially Tobacco and other members of the family Solanaceae. Having failed once, Watson and Crick were now somewhat reluctant to try again and for a while they were forbidden to make further efforts to find a molecular model of DNA.

Diagram that emphasizes the phosphate backbone of DNA. Watson and Crick first made helical models with the phosphates at the center of the helices.
Diagram that emphasizes the phosphate backbone of DNA. Watson and Crick first made helical models with the phosphates at the center of the helices.

Of great importance to the model building effort of Watson and Crick was Rosalind Franklin's understanding of basic chemistry, which indicated that the hydrophilic phosphate-containing backbones of the nucleotide chains of DNA should be positioned so as to interact with water molecules on the outside of the molecule while the hydrophobic bases should be packed into the core. Rosalind Elsie Franklin ( 25 July, 1920 Notting Hill, London – 16 April, 1958 Chelsea London) was an Chemistry (from Egyptian kēme (chem meaning "earth") is the Science concerned with the composition structure and properties Hydrophile, from the Greek (hydros "water" and φιλια (philia "friendship" refers to a physical property of a Molecule A phosphate, an Inorganic chemical, is a salt of Phosphoric acid. Nucleotides are Organic compounds that consist of three joined structures a nitrogenous base a Sugar, and a Phosphate group Water ( H2[[oxygen O]] H OH) is the most abundant Molecule on Earth 's surface composing of about 70% of the Earth's surface as In Chemistry, a molecule is defined as a sufficiently stable electrically neutral group of at least two Atoms in a definite arrangement held together by In Chemistry, hydrophobicity (from the combining form of water in Attic Greek hydro- and for fear phobos) refers to the physical property of Franklin shared this chemical knowledge with Watson and Crick when she rather 'dismisivaly' pointed out to them that their first model (1951, with the phosphates inside) was obviously wrong.

Crick described what he saw as the failure of Maurice Wilkins and Rosalind Franklin to cooperate and work towards finding a molecular model of DNA as a major reason why he and Watson eventually made a second attempt to make a molecular model of DNA. Maurice Hugh Frederick Wilkins CBE FRS ( 15 December 1916 – 5 October 2004) was a New Zealand -born British Rosalind Elsie Franklin ( 25 July, 1920 Notting Hill, London – 16 April, 1958 Chelsea London) was an Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known They asked for, and received, permission to do so from both Bragg and Wilkins. Sir William Lawrence Bragg CH, FRS, ( 31 March 1890 – 1 July 1971) was an Australian Physicist In order to construct their model of DNA, Watson and Crick made use of information from unpublished X-ray diffraction images of Franklin's (shown at meetings and freely shared by Wilkins), including preliminary accounts of Franklin's results/photographs of the X-ray images that were included in a written progress report for the King's laboratory of John Randall from late 1952. X-ray crystallography is a method of determining the arrangement of Atoms within a Crystal, in which a beam of X-rays strikes a crystal and scatters X-ray crystallography is a method of determining the arrangement of Atoms within a Crystal, in which a beam of X-rays strikes a crystal and scatters King's College London is a British Higher education institution and co-founding constituent college of the federal University of London. John Randall is the name of John Randall (Annapolis mayor (1750–1826 mayor of Annapolis Maryland and colonel in the American Revolution Sir

It is a matter of debate whether Watson and Crick should have had access to Franklin's results without her knowledge or permission and before she had a chance to formally publish the results of her detailed analysis of her X-ray diffraction data that were included in the progress report - but Watson and Crick realised her 'staunchly' (uncompromising) held analysis (of the helical nature) was faulty - so they had a dilemma. Rosalind Elsie Franklin ( 25 July, 1920 Notting Hill, London – 16 April, 1958 Chelsea London) was an Academic publishing describes the subfield of Publishing which distributes academic Research and Scholarship. In an effort to clarify this issue, Perutz later published[28] what had been in the progress report, and suggested that nothing was in the report that Franklin herself had not said in her talk (attended by Watson) in late 1951. Max Ferdinand Perutz, OM ( May 19 1914, Vienna, Austria – February 6 2002, Cambridge, Academic publishing describes the subfield of Publishing which distributes academic Research and Scholarship. Further, Perutz explained that the report was to a Medical Research Council (MRC) committee that had been created in order to "establish contact between the different groups of people working for the Council". The Medical Research Council (MRC is a UK organisation dedicated to "promot the balanced development of medical and related biological research Randall's and Perutz's labs were both MRC funded laboratories. The Medical Research Council (MRC is a UK organisation dedicated to "promot the balanced development of medical and related biological research

It is also not clear how important Franklin's unpublished results from the progress report actually were for the model building done by Watson and Crick. Rosalind Elsie Franklin ( 25 July, 1920 Notting Hill, London – 16 April, 1958 Chelsea London) was an Academic publishing describes the subfield of Publishing which distributes academic Research and Scholarship. After the first crude X-ray diffraction images of DNA were collected in the 1930s, William Astbury had talked about stacks of nucleotides spaced at 3. X-ray crystallography is a method of determining the arrangement of Atoms within a Crystal, in which a beam of X-rays strikes a crystal and scatters Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known William Thomas Astbury FRS (Bill Astbury 25 February, 1898 &mdash 4 June, 1961) was an English Physicist and 4 angstrom (0. 34 nanometre) intervals in DNA. A citation to Astbury's earlier X-ray diffraction work was one of only 8 references in Franklin's first paper on DNA. X-radiation (composed of X-rays) is a form of Electromagnetic radiation. Diffraction is normally taken to refer to various phenomena which occur when a wave encounters an obstacle Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known [29] Analysis of Astbury's published DNA results and the better X-ray diffraction images collected by Wilkins and Franklin revealed the helical nature of DNA. William Thomas Astbury FRS (Bill Astbury 25 February, 1898 &mdash 4 June, 1961) was an English Physicist and Academic publishing describes the subfield of Publishing which distributes academic Research and Scholarship. X-ray crystallography is a method of determining the arrangement of Atoms within a Crystal, in which a beam of X-rays strikes a crystal and scatters It was possible to predict the number of bases stacked within a single turn of the DNA helix (10 per turn; a full turn of the helix is 27 angstroms [2. 7 nm] in the compact A form, 34 angstroms [3. 4 nm] in the wetter B form). Wilkins shared this information about the B form of DNA with Crick and Watson. Crick did not see Franklin's B form X-ray images until after the DNA double helix model was published[30]. Photo 51 is the nickname given to an X-ray diffraction image of DNA taken by Rosalind Franklin in 1952 that was critical evidence in identifying

One of the few references cited by Watson and Crick when they published their model of DNA, was to a published article that included Sven Furberg’s DNA model that had the bases on the inside. Academic publishing describes the subfield of Publishing which distributes academic Research and Scholarship. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known Academic publishing describes the subfield of Publishing which distributes academic Research and Scholarship. Thus, the Watson and Crick model was not the first "bases in" model to be published. Furberg's results had also provided the correct orientation of the DNA sugars with respect to the bases. During their model building, Crick and Watson learned that an antiparallel orientation of the two nucleotide chain backbones worked best to orient the base pairs in the centre of a double helix. Crick's access to Franklin's progress report of late 1952 is what made Crick confident that DNA was a double helix with anti-parallel chains, but there were other chains of reasoning and sources of information that also led to these conclusions. Rosalind Elsie Franklin ( 25 July, 1920 Notting Hill, London – 16 April, 1958 Chelsea London) was an

As a result of leaving King's College for another institution, Franklin was asked by John Randall to give up her work on DNA. King's College London is a British Higher education institution and co-founding constituent college of the federal University of London. Rosalind Elsie Franklin ( 25 July, 1920 Notting Hill, London – 16 April, 1958 Chelsea London) was an John Randall is the name of John Randall (Annapolis mayor (1750–1826 mayor of Annapolis Maryland and colonel in the American Revolution Sir Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known When it became clear to Wilkins and the supervisors of Watson and Crick that Franklin was going to the new job, and that Pauling was working on the structure of DNA, they were willing to share Franklin's data with Watson and Crick, in the hope that they could find a good model of DNA before Pauling was able. Maurice Hugh Frederick Wilkins CBE FRS ( 15 December 1916 – 5 October 2004) was a New Zealand -born British Linus Carl Pauling (February 28 1901 – August 19 1994 was an American Scientist, Peace activist, Author and educator. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known Franklin's X-ray diffraction data for DNA and her systematic analysis of DNA's structural features was useful to Watson and Crick in guiding them towards a correct molecular model. X-ray crystallography is a method of determining the arrangement of Atoms within a Crystal, in which a beam of X-rays strikes a crystal and scatters The key problem for Watson and Crick, which could not be resolved by the data from King's College, was to guess how the nucleotide bases pack into the core of the DNA double helix.

Diagrammatic representation of some key structural features of DNA. The similar structures of guanine:cytosine and adenine:thymine base pairs is illustrated. The base pairs are held together by hydrogen bonds. The phosphate backbones are anti-parallel.
Diagrammatic representation of some key structural features of DNA. The similar structures of guanine:cytosine and adenine:thymine base pairs is illustrated. The base pairs are held together by hydrogen bonds. The phosphate backbones are anti-parallel.

Another key to finding the correct structure of DNA was the so-called Chargaff ratios, experimentally determined ratios of the nucleotide subunits of DNA: the amount of guanine is equal to cytosine and the amount of adenine is equal to thymine. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known Chargaff's rules state that DNA from any cell of all organisms should have a 11 ratio of Pyrimidine and Purine bases and more specifically that the amount Guanine is one of the five main Nucleobases found in the Nucleic acids DNA and RNA, the others being Adenine, Cytosine, Cytosine is one of the five main bases found in DNA and RNA. It is a Pyrimidine derivative with a Heterocyclic Aromatic ring Adenine is a Purine with a variety of roles in Biochemistry including Cellular respiration, in the form of both the energy-rich Adenosine Thymine is one of the four bases in the Nucleic acid of DNA that make up the letters ATGC A visit by Erwin Chargaff to England in 1952 reinforced the salience of this important fact for Watson and Crick. Erwin Chargaff ( Czernowitz, August 11, 1905 &ndash New York City, USA, June 20, 2002) was an Austrian England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland The significance of these ratios for the structure of DNA were not recognized until Watson, persisting in building structural models, realized that A:T and C:G pairs are structurally similar. In particular, the length of each base pair is the same. The base pairs are held together by hydrogen bonds, the same non-covalent interaction that stabilizes the protein α helix. In Molecular biology, two Nucleotides on opposite complementary DNA or RNA strands that are connected via Hydrogen bonds are called A hydrogen bond results from a Dipole-dipole force between an Electronegative atom and a Hydrogen atom bonded to Nitrogen, Oxygen Watson’s recognition of the A:T and C:G pairs was aided by information from Jerry Donohue[31] about the most likely structures of the nucleobases. Jerry Donohue ( June 12, 1920 &mdash February 13, 1985) was a theoretical and physical chemist Structure The "skeleton" of adenine After the discovery of the hydrogen bonded A:T and C:G pairs, Watson and Crick soon had their double helix model of DNA with the hydrogen bonds at the core of the helix providing a way to unzip the two complementary strands for easy replication: the last key requirement for a likely model of the genetic molecule. Hydrogen (ˈhaɪdrədʒən is the Chemical element with Atomic number 1 DNA replication is the process of copying a double-stranded DNA molecule to form two double-stranded molecules As important as Crick’s contributions to the discovery of the double helical DNA model were, he stated that without the chance to collaborate with Watson, he would not have found the structure by himself.

Crick did tentatively attempt to perform some experiments on nucleotide base pairing, but he was more of a theoretical than an experimental biologist. There was another close approach to discovery of the base pairing rules in early 1952. Crick had started to think about interactions between the bases. He asked John Griffith to try to calculate attractive interactions between the DNA bases from chemical principles and quantum mechanics. A chemical substance is a Material with a definite chemical composition. Quantum mechanics is the study of mechanical systems whose dimensions are close to the Atomic scale such as Molecules Atoms Electrons Griffith's best guess was that A:T and G:C were attractive pairs. At that time, Crick was not aware of Chargaff's rules and he made little of Griffith's calculations. Erwin Chargaff ( Czernowitz, August 11, 1905 &ndash New York City, USA, June 20, 2002) was an Austrian It did start him thinking about complementary replication. Identification of the correct base-pairing rules (A-T, G-C) was achieved by Watson "playing" with cardboard cut-out models of the nucleotide bases, much in the manner that Pauling had discovered the protein alpha helix a few years earlier. Linus Carl Pauling (February 28 1901 – August 19 1994 was an American Scientist, Peace activist, Author and educator. The Watson and Crick discovery of the DNA double helix structure was made possible by their willingness to combine theory, modeling and experimental results (albeit mostly done by others) to achieve their goal.

Molecular biology

In 1954, at the age of 37, Crick completed his Ph.D. "PhD" redirects here for other uses see PhD (disambiguation. thesis: "X-Ray Diffraction: Polypeptides and Proteins" and received his degree. Crick then worked in the laboratory of David Harker at Brooklyn Polytechnic Institute, where he continued to develop his skills in the analysis of X-ray diffraction data for proteins, working primarily on ribonuclease and the mechanisms of protein synthesis. X-ray crystallography is a method of determining the arrangement of Atoms within a Crystal, in which a beam of X-rays strikes a crystal and scatters Ribonuclease, abbreviated commonly as RNase, is a Nuclease that catalyzes the degradation of RNA into smaller components Protein synthesis is the creation of proteins using DNA and' RNA'. David Harker, the American X-ray crystallographer, was described as "the John Wayne of crystallography" by Vittorio Luzzati, a crystallographer at the Centre for Molecular Genetics in Gif-sur-Yvette near Paris, who had worked with Rosalind Franklin.

After the discovery of the double helix model of DNA, Crick’s interests quickly turned to the biological implications of the structure. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known In 1953, Watson and Crick published another article in Nature which stated: "it therefore seems likely that the precise sequence of the bases is the code that carries the genetical information". Academic publishing describes the subfield of Publishing which distributes academic Research and Scholarship. [32]

Collagen triple helix.
Collagen triple helix.

In 1956, Crick and Watson speculated on the structure of small viruses. A virus (from the Latin virus meaning Toxin or Poison) is a sub-microscopic infectious agent that is unable They suggested that spherical viruses such as Tomato bushy stunt virus had icosahedral symmetry and were made from 60 identical subunits. A virus (from the Latin virus meaning Toxin or Poison) is a sub-microscopic infectious agent that is unable Tomato bushy stunt virus is a Tombusvirus first reported in Tomatoes in 1935. [33]

After his short time in New York, Crick returned to Cambridge where he worked until 1976, at which time he moved to California. New York ( is a state in the Mid-Atlantic and Northeastern regions of the United States and is the nation's third most populous California ( is a US state on the West Coast of the United States, along the Pacific Ocean. Crick engaged in several X-ray diffraction collaborations such as one with Alexander Rich on the structure of collagen. Alexander Rich, MD ( American; born c 1925 is a Biologist and Biophysicist. Collagen is the main Protein of Connective tissue in Animals and the most abundant protein in Mammals making up about 50% of the whole-body protein [34] However, Crick was quickly drifting away from continued work related to his expertise in the interpretation of X-ray diffraction patterns of proteins.

George Gamow established a group of scientists interested in the role of RNA as an intermediary between DNA as the genetic storage molecule in the nucleus of cells and the synthesis of proteins in the cytoplasm. George Gamow (pronounced as ˈgamof ( March 4, 1904 &ndash August 19, 1968), born Georgiy Antonovich Gamov (Георгий Антонович Ribonucleic acid ( RNA) is a Nucleic acid that consists of a long chain of Nucleotide units Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known In Cell biology, the nucleus (pl nuclei; from Latin la ''nucleus'' or la ''nuculeus'' "little nut" or kernel is a membrane-enclosed The cytoplasm is the contents of a cell that is enclosed within the Plasma membrane. It was clear to Crick that there had to be a code by which a short sequence of nucleotides would specify a particular amino acid in a newly synthesized protein. In 1956, Crick wrote an informal paper about the genetic coding problem for the small group of scientists in Gamow’s RNA group. [35] In this article, Crick reviewed the evidence supporting the idea that there was a common set of about 20 amino acids used to synthesize proteins. Crick proposed that there was a corresponding set of small adaptor molecules that would hydrogen bond to short sequences of a nucleic acid and also link to one of the amino acids. He also explored the many theoretical possibilities by which short nucleic acid sequences might code for the 20 amino acids.

Molecular model of a tRNA molecule. Crick predicted that such adaptor molecules might exist as the links between codons and amino acids.
Molecular model of a tRNA molecule. Transfer RNA (abbreviated tRNA) is a small RNA (usually about 74-95 nucleotides that transfers a specific Amino acid to a growing polypeptide chain at Crick predicted that such adaptor molecules might exist as the links between codons and amino acids. The genetic code is the set of rules by which information encoded in genetic material ( DNA or RNA sequences is translated into Proteins

During the mid-to-late 1950s Crick was very much intellectually engaged in sorting out the mystery of how proteins are synthesized. By 1958, Crick’s thinking had matured and he could list in an orderly way all of the key features of the protein synthesis process:[36]

The “adaptor molecules” were eventually shown to be tRNAs and the catalytic “ribonucleic-protein complexes” became known as ribosomes. Transfer RNA (abbreviated tRNA) is a small RNA (usually about 74-95 nucleotides that transfers a specific Amino acid to a growing polypeptide chain at Ribosomes ( from ribo nucleic acid and "Greek soma ( meaning body") are complexes of RNA and Protein that An important step was later (1960) realization that the messenger RNA was not the same as the ribosomal RNA. Messenger ribonucleic acid ( mRNA) is a molecule of RNA encoding a chemical "blueprint" for a Protein product Ribosomal RNA ( rRNA) is the central component of the Ribosome, the protein manufacturing machinery of all living cells. None of this, however, answered the fundamental theoretical question of the exact nature of the genetic code. In his 1958 article, Crick speculated, as had others, that a triplet of nucleotides could code for an amino acid. In Chemistry, an amino acid is a Molecule containing both Amine and Carboxyl Functional groups In Biochemistry, this Such a code might be “degenerate”, with 4x4x4=64 possible triplets of the four nucleotide subunits while there were only 20 amino acids. Some amino acids might have multiple triplet codes. Crick also explored other codes in which for various reasons only some of the triplets were used, “magically” producing just the 20 needed combinations. Experimental results were needed; theory alone could not decide the nature of the code. Crick also used the term “central dogma” to summarize an idea that implies that genetic information flow between macromolecules would be essentially one-way:

DNA → RNA → Protein

Some critics thought that by using the word "dogma" Crick was implying that this was a rule that could not be questioned, but all he really meant was that it was a compelling idea without much solid evidence to support it. The central dogma of molecular biology was first enunciated by Francis Crick in 1958 and re-stated in a Nature paper published in 1970 The term macromolecule by definition implies "large Molecule " In his thinking about the biological processes linking DNA genes to proteins, Crick made explicit the distinction between the materials involved, the energy required, and the information flow. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known Crick was focused on this third component (information) and it became the organizing principle of what became known as molecular biology. Molecular biology is the study of Biology at a molecular level Crick had by this time become a dominant, if not the dominant, theoretical molecular biologist.

Proof that the genetic code is a degenerate triplet code finally came from genetics experiments, some of which were performed by Crick. The genetic code is the set of rules by which information encoded in genetic material ( DNA or RNA sequences is translated into Proteins [37] The details of the code came mostly from work by Marshall Nirenberg and others who synthesized synthetic RNA molecules and used them as templates for in vitro protein synthesis[38]. Marshall Warren Nirenberg (born April 10, 1927) is a US Biochemist and geneticist.

Controversy about using King's College London's results

An enduring controversy has been generated by Watson and Crick's use of DNA X-ray diffraction data collected by Rosalind Franklin and her student Raymond Gosling. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known X-radiation (composed of X-rays) is a form of Electromagnetic radiation. Diffraction is normally taken to refer to various phenomena which occur when a wave encounters an obstacle Rosalind Elsie Franklin ( 25 July, 1920 Notting Hill, London – 16 April, 1958 Chelsea London) was an Raymond Gosling (born 1926 is a distinguished scientist who worked with both Maurice Wilkins and Rosalind Franklin at King's College London in deducing The controversy arose from the fact that some of the data were shown to them, without her knowledge, by her boss, Maurice Wilkins, and by Max Perutz. [39] Her experimental results provided estimates of water content of DNA crystals and these results were most consistent with the three[40] sugar-phosphate backbones being on the outside of the molecule. Water is a common Chemical substance that is essential for the survival of all known forms of Life. Franklin personally told Crick and Watson that the backbones had to be on the outside, whilst vehemently stating (erroneously) that is exhibited a helical structure. Her identification of the space group for DNA crystals revealed to Crick that the DNA strands were antiparallel, which helped Watson and Crick decide to look for DNA models with two polynucleotide strands. The space group of a Crystal or crystallographic group is a mathematical description of the Symmetry inherent in the structure The X-ray diffraction images collected by Franklin provided the best evidence for the helical nature of DNA - but she failed to recognise this fact. However Franklin's experimental work proved important in Crick and Watson's development of the correct model.

Prior to publication of the double helix structure, Watson and Crick had little interaction with Franklin. Academic publishing describes the subfield of Publishing which distributes academic Research and Scholarship. Rosalind Elsie Franklin ( 25 July, 1920 Notting Hill, London – 16 April, 1958 Chelsea London) was an Crick and Watson felt that they had benefited from collaborating with Maurice Wilkins. Maurice Hugh Frederick Wilkins CBE FRS ( 15 December 1916 – 5 October 2004) was a New Zealand -born British They offered him a co-authorship on the article that first described the double helix structure of DNA. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known Wilkins turned down the offer and was in part responsible for the terse character of the acknowledgment of experimental work done at King's College. King's College London is a British Higher education institution and co-founding constituent college of the federal University of London. Rather than make any of the DNA researchers at King's College co-authors on the Watson and Crick double helix article, the solution that was arrived at was to publish two additional papers from King's College along with the helix paper. King's College London is a British Higher education institution and co-founding constituent college of the federal University of London. Brenda Maddox suggested that because of the importance of her experimental results used Watson and Crick's model building and theoretical analysis, Franklin should have had her name on the original Watson and Crick paper in Nature. Brenda Maddox is an American Author, Journalist, and Biographer, who has lived in the UK since 1960 [41] Watson and Crick offered joint authorship to Wilkins which he turned down at the time, but which he may have subsequently regretted. (Franklin and Ray Gosling submitted their own joint 'second' paper to Nature at the same time as Wilkins, Stokes and Wilson submitted theirs, i. Nature is a prominent Scientific journal, first published on 4 November 1869 e. , the 'third' paper on DNA. ).

Views on religion

Crick once joked, "Christianity may be OK between consenting adults in private but should not be taught to young children. "[42]

In his book Of Molecules and Men, Crick expressed his views on the relationship between science and religion. Science (from the Latin scientia, meaning " Knowledge " or "knowing" is the effort to discover, and increase human understanding A religion is a set of Tenets and practices often centered upon specific Supernatural and moral claims about Reality, the Cosmos [43] After suggesting that it would become possible for people to wonder if a computer might be programmed so as to have a soul, he wondered: at what point during biological evolution did the first organism have a soul? At what moment does a baby get a soul? Crick stated his view that the idea of a non-material soul that could enter a body and then persist after death is just that, an imagined idea. A computer is a Machine that manipulates data according to a list of instructions. The soul, according to many religious and philosophical beliefs is the self-awareness, or Consciousness, unique to a particular living eVolution is the third Album by eLDee, it was due to be released in 2008 The soul, according to many religious and philosophical beliefs is the self-awareness, or Consciousness, unique to a particular living For Crick, the mind is a product of physical brain activity and the brain had evolved by natural means over millions of years. MIND ( Moving In New Directions) (est 1975 is an alternative education high school in Montreal, Quebec, Canada. The brain is the center of the Nervous system in animals All Vertebrates and the majority of Invertebrates have a brain The brain is the center of the Nervous system in animals All Vertebrates and the majority of Invertebrates have a brain Crick felt that it was important that evolution by natural selection be taught in public schools and that it was regrettable that English schools had compulsory religious instruction. Natural selection is the process by which favorable Heritable traits become more common in successive Generations of a Population of England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland A religion is a set of Tenets and practices often centered upon specific Supernatural and moral claims about Reality, the Cosmos Crick felt that a new scientific world view was rapidly being established, and predicted that once the detailed workings of the brain were eventually revealed, erroneous Christian concepts about the nature of man and the world would no longer be tenable; traditional conceptions of the "soul" would be replaced by a new understanding of the physical basis of mind. The brain is the center of the Nervous system in animals All Vertebrates and the majority of Invertebrates have a brain A Christian is a person who adheres to Christianity, a monotheistic Religion centered on the life and teachings of Jesus of Nazareth A man is a Male Human. The term man (irregular plural MIND ( Moving In New Directions) (est 1975 is an alternative education high school in Montreal, Quebec, Canada. He was skeptical of organized religion, referring to himself as a skeptic and an agnostic with "a strong inclination towards atheism". A religion is a set of Tenets and practices often centered upon specific Supernatural and moral claims about Reality, the Cosmos [44]

In 1960, Crick accepted a fellowship at Churchill College Cambridge, one factor being that the new college did not have a chapel. Churchill College is one of the constituent colleges of the University of Cambridge and was founded in 1958 as the national and Commonwealth memorial to Winston Sometime later a large donation was made to establish a chapel and the fellowship elected to accept it. Crick resigned his fellowship in protest[45].

In October 1969, Crick participated in a celebration of the 100th year of the journal Nature. Nature is a prominent Scientific journal, first published on 4 November 1869 Crick attempted to make some predictions about what the next 30 years would hold for molecular biology. His speculations were later published in Nature. [46] Near the end of the article, Crick briefly mentioned the search for life on other planets, but he held little hope that extraterrestrial life would be found by the year 2000. A planet, as defined by the International Astronomical Union (IAU is a celestial body Orbiting a Star or stellar remnant that is Extraterrestrial life is Life originating outside of the Earth. He also discussed what he described as a possible new direction for research, what he called "biochemical theology". Research is defined as Human activity based on Intellectual application in the investigation of Matter. Crick wrote, "So many people pray that one finds it hard to believe that they do not get some satisfaction from it. . . . "

Crick suggested that it might be possible to find chemical changes in the brain that were molecular correlates of the act of prayer. A chemical substance is a Material with a definite chemical composition. Prayer is the act of attempting to communicate with a Deity or spirit He speculated that there might be a detectable change in the level of some neurotransmitter or neurohormone when people pray. See Chemical synapse for an introduction to concepts and terminology used in this article A neurohormone is any Hormone produced by neurosecretory cells usually in the Brain. Crick may have been imagining substances such as dopamine that are released by the brain under certain conditions and produce rewarding sensations. Dopamine is a Hormone and Neurotransmitter occurring in a wide variety of animals including both vertebrates and invertebrates The brain is the center of the Nervous system in animals All Vertebrates and the majority of Invertebrates have a brain Crick's suggestion that there might some day be a new science of "biochemical theology" seems to have been realized under an alternative name: there is now the new field of Neurotheology. Science (from the Latin scientia, meaning " Knowledge " or "knowing" is the effort to discover, and increase human understanding Neurotheology [47] Crick's view of the relationship between science and religion continued to play a role in his work as he made the transition from molecular biology research into theoretical neuroscience. Molecular biology is the study of Biology at a molecular level Research is defined as Human activity based on Intellectual application in the investigation of Matter.

Directed panspermia

During the 1960s, Crick became concerned with the origins of the genetic code. In 1966, Crick took the place of Leslie Orgel at a meeting where Orgel was to talk about the origin of life. Leslie Eleazer Orgel FRS ( January 12, 1927 &ndash October 27, 2007) was a British chemist In the Natural sciences, Abiogenesis, or origin of life, is the study of how Life on Earth emerged from Inanimate Organic Crick speculated about possible stages by which an initially simple code with a few amino acid types might have evolved into the more complex code used by existing organisms. In Chemistry, an amino acid is a Molecule containing both Amine and Carboxyl Functional groups In Biochemistry, this [48] At that time, everyone thought of proteins as the only kind of enzymes and ribozymes had not yet been found. Proteins are large Organic compounds made of Amino acids arranged in a linear chain and joined together by Peptide bonds between the Carboxyl Enzymes are Biomolecules that catalyze ( ie increase the rates of Chemical reactions Almost all enzymes are Proteins A ribozyme (from ribo nucleic acid en' zyme', also called RNA Enzyme or catalytic RNA is an RNA Molecule that catalyzes Many molecular biologists were puzzled by the problem of the origin of a protein replicating system that is as complex as that which exists in organisms currently inhabiting Earth. Molecular biology is the study of Biology at a molecular level EARTH was a short-lived Japanese vocal trio which released 6 singles and 1 album between 2000 and 2001 In the early 1970s, Crick and Orgel further speculated about the possibility that the production of living systems from molecules may have been a very rare event in the universe, but once it had developed it could be spread by intelligent life forms using space travel technology, a process they called “Directed Panspermia”. In Chemistry, a molecule is defined as a sufficiently stable electrically neutral group of at least two Atoms in a definite arrangement held together by The Universe is defined as everything that Physically Exists: the entirety of Space and Time, all forms of Matter, Energy Spaceflight is the use of Space technology to fly a Spacecraft into and through Outer space. Panspermia ( Gk. πάς/πάν (pas/pan all and σπέρμα ( sperma, seed is the Hypothesis that "seeds" of Life exist already [49] In a retrospective article,[50] Crick and Orgel noted that they had been overly pessimistic about the chances of abiogenesis on Earth when they had assumed that some kind of self-replicating protein system was the molecular origin of life. In the Natural sciences, Abiogenesis, or origin of life, is the study of how Life on Earth emerged from Inanimate Organic

Neuroscience, other interests

Results from an fMRI experiment in which people made a conscious decision about a visual stimulus. The small region of the brain coloured orange shows patterns of activity that correlate with the decision making process. Crick stressed the importance of finding new methods to probe human brain function.
Results from an fMRI experiment in which people made a conscious decision about a visual stimulus. Functional MRI or functional Magnetic Resonance Imaging (fMRI is a type of specialized MRI scan The small region of the brain coloured orange shows patterns of activity that correlate with the decision making process. Crick stressed the importance of finding new methods to probe human brain function.

Crick's period at Cambridge was the pinnacle of his long scientific career, but he left Cambridge in 1977 after 30 years, having been offered (and having refused) the Mastership of Gonville & Caius. Gonville and Caius College Cambridge is a constituent College of Cambridge University, one of the world's most academically respected institutions James Watson claimed at a Cambridge conference marking the 50th anniversary of the discovery of the structure of DNA in 2003: "Now perhaps it's a pretty well kept secret that one of the most uninspiring acts of Cambridge University over this past century was to turn down Francis Crick when he applied to be the Professor of Genetics, in 1958. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known The Arthur Balfour Professorship of Genetics is one of the senior professorships in Genetics at the University of Cambridge, founded in 1912 Now there may have been a series of arguments, which lead them to reject Francis. It was really saying, don't push us to the frontier. " The apparently "pretty well kept secret" had already been recorded in Soraya De Chadarevian's "Designs For Life: Molecular Biology After World War II", published by CUP in 2002. His major contribution to molecular biology in Cambridge is well documented in The History of the University of Cambridge: Volume 4 (1870 to 1990), which was published by Cambridge University Press in 1992. Academic publishing describes the subfield of Publishing which distributes academic Research and Scholarship. Cambridge University Press (known colloquially as CUP is a Publisher given a Royal Charter by Henry VIII in 1534

According to the University of Cambridge's genetics department official website, the electors of the professorship could not reach consensus, prompting the intervention of then University Vice-Chancellor Lord Adrian. The University of Cambridge (often Cambridge University) located in Cambridge, England, is the second-oldest university in the A Vice-Chancellor (commonly called the VC) of a University in England, Wales, Northern Ireland, New Zealand, Edgar Douglas Adrian 1st Baron Adrian OM PRS ( 30 November 1889 &ndash 4 August 1977) was a British electrophysiologist Lord Adrian first offered the professorship to a compromise candidate, Guido Pontecorvo, who refused, and is said to have offered it then to Crick, who also refused. Edgar Douglas Adrian 1st Baron Adrian OM PRS ( 30 November 1889 &ndash 4 August 1977) was a British electrophysiologist Guido Pontecorvo ( 29 November 1907, Pisa, Italy - 25 September 1999) was an Italian geneticist.

In 1976, Crick took a sabbatical year at the Salk Institute for Biological Studies in La Jolla, California. A sabbatical (from the Latin sabbaticus, from the Greek sabbatikos, from Hebrew shabbathon, i Salk Institute2jpg|thumb|right|200px|Salk Institute]]The Salk Institute for Biological Studies is an independent non-profit scientific research institute located in La Jolla California La Jolla (ləˈhɔɪə "luh-HOY-uh") is a wealthy Seaside resort community of up to 42808 residents within the city of San Diego, California Crick had been a nonresident fellow of the Institute since 1960. Crick wrote, "I felt at home in Southern California. "[51] After the sabbatical, Crick left Cambridge in order to continue working at the Salk Institute. A sabbatical (from the Latin sabbaticus, from the Greek sabbatikos, from Hebrew shabbathon, i Salk Institute2jpg|thumb|right|200px|Salk Institute]]The Salk Institute for Biological Studies is an independent non-profit scientific research institute located in La Jolla California He was also a professor at the University of California, San Diego. The University of California San Diego (popularly known as UC San Diego or UCSD) is a public Research university in San Diego, California He taught himself neuroanatomy and studied many other areas of neuroscience research. Neuroanatomy is the science for localizing function in the Human brain. Neuroscience is a field devoted to the scientific study of the nervous system Research is defined as Human activity based on Intellectual application in the investigation of Matter. It took him several years to disengage from molecular biology because exciting discoveries continued to be made, including the discovery of alternative splicing and the discovery of restriction enzymes, which helped make possible genetic engineering. Molecular biology is the study of Biology at a molecular level Alternative splicing is the RNA splicing variation mechanism in which the Exons of the primary gene transcript the Pre-mRNA, are separated and reconnected A restriction enzyme (or restriction Endonuclease) is an Enzyme that cuts double-stranded DNA at specific recognition Nucleotide Genetic engineering, Recombinant DNA technology, genetic modification/manipulation (GM and gene splicing are terms that apply to the direct Eventually, in the 1980s, Crick was able to devote his full attention to his other interest, consciousness. Consciousness has been defined loosely as a constellation of attributes of Mind such as Subjectivity, Self-awareness, Sentience, and the His autobiographical book, What Mad Pursuit, includes a description of why he left molecular biology and switched to neuroscience. An autobiography, from the Greek αὐτός autos "self" βίος bios "life" and γράφειν graphein "to write" Molecular biology is the study of Biology at a molecular level Neuroscience is a field devoted to the scientific study of the nervous system

Upon taking up work in theoretical neuroscience, Crick was struck by several things:

Crick hoped he might aid progress in neuroscience by promoting constructive interactions between specialists from the many different subdisciplines concerned with consciousness. Neuroscience is a field devoted to the scientific study of the nervous system Black box is a technical term for a device or system or object when it is viewed primarily in terms of its input and output characteristics A taboo is a strong Social prohibition (or ban) against words objects actions or discussions that are considered undesirable or offensive by a group culture Neurobiologist is a life scientist who is devoted to the study of Neurobiology. Consciousness has been defined loosely as a constellation of attributes of Mind such as Subjectivity, Self-awareness, Sentience, and the He even collaborated with neurophilosophers such as Patricia Churchland. Neurophilosophy is the interdisciplinary study of Neuroscience and Philosophy. Patricia Smith Churchland (born July 16, 1943 in Oliver British Columbia, Canada) is a Canadian-American Philosopher working at the Crick established a collaboration with Christof Koch that lead to publication of a series of articles on consciousness during the period spanning from 1990[52] to 2005. Christof Koch (born November 13, 1956, Kansas City) is an American neuroscientist working on the neural basis of Consciousness Academic publishing describes the subfield of Publishing which distributes academic Research and Scholarship. Crick made the strategic decision to focus his theoretical investigation of consciousness on how the brain generates visual awareness within a few hundred milliseconds of viewing a scene. Consciousness has been defined loosely as a constellation of attributes of Mind such as Subjectivity, Self-awareness, Sentience, and the The brain is the center of the Nervous system in animals All Vertebrates and the majority of Invertebrates have a brain In Biological psychology, awareness comprises a human's or an animal's perception and Cognitive reaction to a condition or event In Psychology, visual perception is the ability to interpret information from Visible light reaching the Eyes The resulting Perception is also Crick and Koch proposed that consciousness seems so mysterious because it involves very short-term memory processes that are as yet poorly understood. In Psychology, memory is an organism's ability to store retain and subsequently retrieve information Crick also published a book describing how neurobiology had reached a mature enough stage so that consciousness could be the subject of a unified effort to study it at the molecular, cellular and behavioural levels. Neurobiology is the study of cells of the Nervous system and the organization of these cells into functional circuits that process information and mediate behavior See also List of basic cell biology topics. Cell biology (also called cellular biology or formerly cytology, from the Behavior or behaviour (see spelling differences) refers to the actions or Reactions of an object or Organism, usually [53] Crick's book The Astonishing Hypothesis made the argument that neuroscience now had the tools required to begin a scientific study of how brains produce conscious experiences. The Astonishing Hypothesis is Francis Crick 's 1994 book about Consciousness. The brain is the center of the Nervous system in animals All Vertebrates and the majority of Invertebrates have a brain Crick was skeptical about the value of computational models of mental function that are not based on details about brain structure and function. Connectionism is an approach in the fields of Artificial intelligence, Cognitive psychology / Cognitive science, Neuroscience and Philosophy The brain is the center of the Nervous system in animals All Vertebrates and the majority of Invertebrates have a brain

Crick was elected a fellow of CSICOP in 1983 and a Humanist Laureate of the International Academy of Humanism in the same year. The Committee for Skeptical Inquiry ( CSI) formerly known as the Committee for the Scientific Investigation of Claims of the Paranormal ( CSICOP) is a The Council for Secular Humanism (originally the Council for Democratic and Secular Humanism, or CODESH) is a secular humanist organization headquartered In 1995, Francis Crick was one of the original endorsers of the Ashley Montagu Resolution to petition for an end to the genital mutilation of children. The Ashley Montagu Resolution refers to the petition to the World Court to end the Genital modification and mutilation of children worldwide The terms genital modification and genital mutilation can refer to permanent or temporary changes to Human Genitals.

Reactions to Crick and his work

Crick has widely been described as talkative, brash, and lacking modesty. [54] His personality combined with his scientific accomplishments produced many opportunities for Crick to stimulate reactions from others, both inside and outside of the scientific world, which was the centre of his intellectual and professional life. [55] Crick spoke rapidly, and rather loudly, and had an infectious and reverberating laugh, and a lively sense of humour. One colleague from the Salk Institute described him as "a brainstorming intellectual powerhouse with a mischievous smile. Salk Institute2jpg|thumb|right|200px|Salk Institute]]The Salk Institute for Biological Studies is an independent non-profit scientific research institute located in La Jolla California . . " Francis was never mean-spirited, just incisive. He detected microscopic flaws in logic. In a room full of smart scientists, Francis continually reearned his position as the heavyweight champ. "[56]

Religious beliefs

The conservative political analyst Mark Steyn published an obituary of Crick and attempted a deconstruction of Crick's scientific motivations. Mark Steyn, born in Canada in 1959, is a self-described conservative writer and commentator about politics arts and culture Deconstruction is a term used in Philosophy, Literary criticism, and the Social sciences, popularised through its usage by Jacques Derrida in [57] Steyn characterized Crick as a militant atheist and asserted that it was his atheism that "drove" Crick to move beyond conventional molecular biology towards speculative topics such as panspermia. For the British newspaper and Marxist organization see Militant tendency. Atheism Molecular biology is the study of Biology at a molecular level Panspermia ( Gk. πάς/πάν (pas/pan all and σπέρμα ( sperma, seed is the Hypothesis that "seeds" of Life exist already Steyn described the theory of directed panspermia as amounting to, "gods in the skies who fertilize the earth and then retreat to the heavens beyond our reach. " Steyn categorized Crick’s ideas on directed panspermia as a result of "hyper-rationalism" that, "lead him round to embracing a belief in a celestial creator of human life, indeed a deus ex machina. A deus ex machina ( lat. ˈdeːus eks ˈmaːkʰina literally "god from a/the machine" is an improbable "

Steyn's critique of Crick ignored the fact that Crick never held a belief in panspermia. Crick explored the hypothesis that it might be possible for life forms to be moved from one planet to another. What "drove" Crick towards speculation about directed panspermia was the difficulty of imagining how a complex system like a cell could arise under pre-biotic conditions from non-living chemical components. The cell is the structural and functional unit of all known living Organisms It is the smallest unit of an organism that is classified as living and is often called After ribozymes were discovered, Crick became much less interested in panspermia because it was then much easier to imagine the pre-biotic origins of life as being made possible by some set of simple self-replicating polymers. A ribozyme (from ribo nucleic acid en' zyme', also called RNA Enzyme or catalytic RNA is an RNA Molecule that catalyzes In the Natural sciences, Abiogenesis, or origin of life, is the study of how Life on Earth emerged from Inanimate Organic [50]

Eugenics

Crick occasionally expressed his views on eugenics, usually in private letters. Eugenics is a social Philosophy which advocates the improvement of Human Hereditary traits through various forms of intervention For example, Crick advocated a form of positive eugenics in which wealthy parents would be encouraged to have more children. Liberal eugenics is an Ideology which advocates the use of reproductive and genetic technologies where the choice of the goals of enhancing human [58] He once remarked, "In the long run, it is unavoidable that society will begin to worry about the character of the next generation. . . It is not a subject at the moment which we can tackle easily because people have so many religious beliefs and until we have a more uniform view of ourselves I think it would be risky to try and do anything in the way of eugenics. . . I would be astonished if, in the next 100 or 200 years, society did not come round to the view that they would have to try to improve the next generation in some extent or one way or another. " Some observers have labeled Crick's views on eugenics as "controversial"[59]

Creationism

It has been suggested by some observers that Crick's speculation about panspermia, "fits neatly into the intelligent design concept. Panspermia ( Gk. πάς/πάν (pas/pan all and σπέρμα ( sperma, seed is the Hypothesis that "seeds" of Life exist already "[60] Crick's name was raised in this context in the Kitzmiller v. Dover Area School District trial over the teaching of intelligent design. Background Certain members of the Dover Board of Education expressed concern about the teaching of Evolution. Intelligent However, Crick wrote:

"The age of the earth is now established beyond any reasonable doubt as very great, yet in the United States millions of Fundamentalists still stoutly defend the naive view that it is relatively short, an opinion deduced from reading the Christian Bible too literally. They also usually deny that animals and plants have evolved and changed radically over such long periods, although this is equally well established. This gives one little confidence that what they have to say about the process of natural selection is likely to be unbiased, since their views are predetermined by a slavish adherence to religious dogmas. "[61]

In the 1987 United States Supreme Court case Edwards v. Aguillard, Crick joined a group of other Nobel laureates who advised that, "'Creation-science' simply has no place in the public-school science classroom. The Supreme Court of the United States is the highest judicial body in the United States and leads the federal judiciary. Edwards v Aguillard, was a case heard by the Supreme Court of the United States. This is a list of Nobel Prize Laureates awarded for their outstanding contributions to Humanitarian causes for Peace, work in Literature "[62] Crick was also an advocate for the establishment of Darwin Day as a British national holiday. Darwin Day is a recently instituted celebration intended to celebrate the Anniversary of the birth of Charles Darwin on February 12, The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located [63]

Recognition

The Francis Crick Prize Lectures at The Royal Society, London
The Francis Crick Prize Lecture was established in 2003 following an endowment by his former colleague, Sydney Brenner, joint winner of the 2002 Nobel Prize in Physiology and Medicine. Sydney Brenner, CH FRS (born January 13 1927) is a South African biologist and the 2002 Nobel prize in Physiology or Medicine The Nobel Prize (Nobelpriset (Nobelprisen is a Swedish prize established in the 1895 will of Swedish chemist Alfred Nobel; it was first awarded in Peace, Literature Physiology (from Greek grc φύσις physis, "nature origin" and grc -λογία -logia) is the study of the mechanical physical Medicine is the art and science of healing It encompasses a range of Health care practices evolved to maintain and restore Human Health by the [64] The lecture is delivered annually in any field of biological sciences, with preference given to the areas in which Francis Crick himself worked. Importantly, the lectureship is aimed at younger scientists, ideally under 40, or whose career progression corresponds to this age.

The Francis Crick Graduate Lectures at the University of Cambridge
The University of Cambridge Graduate School of Biological, Medical and Veterinary Sciences hosts The Francis Crick Graduate Lectures. The University of Cambridge (often Cambridge University) located in Cambridge, England, is the second-oldest university in the The first two lectures were by John Gurdon and Tim Hunt. Sir John Bertrand Gurdon, FRS (b 2 October 1933) is a British developmental biologist. Sir Richard Timothy "Tim" Hunt, FRS, (born February 19, 1943 in Neston, Cheshire) is an English Biochemist [65][66]

"For my generation, Francis Crick was probably the most obviously influential presence. He was often at lunch in the canteen of the Laboratory of Molecular Biology where he liked to explain what he was thinking about, and he was always careful to make sure that everyone round the table really understood. He was a frequent presence at talks in and around Cambridge, where he liked to ask questions. Sometimes, I remember thinking, they seemed slightly ignorant questions to which a man of his extraordinary range and ability ought to have known the answers. Only slowly did it dawn on me that he only and always asked questions when he was unclear or unsure, a great lesson. " (Tim Hunt, first Francis Crick Graduate Lecturer: June 2005)

The wording on the new DNA sculpture (which was donated by James Watson) outside Clare College's Thirkill Court, Cambridge, England is

a) on the base:

i) "These strands unravel during cell reproduction. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known Clare College is a college of the University of Cambridge, the second oldest surviving college after Peterhouse. The city of Cambridge (ˈkeɪmbrɪdʒ is a university town and the administrative centre of the county of Cambridgeshire, England England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland Genes are encoded in the sequence of bases. "

ii) "The double helix model was supported by the work of Rosalind Franklin and Maurice Wilkins. "

b) on the helices:

i) "The structure of DNA was discovered in 1953 by Francis Crick and James Watson while Watson lived here at Clare. "

ii) "The molecule of DNA has two helical strands that are linked by base pairs Adenine - Thymine or Guanine - Cytosine. "

The aluminium sculpture stands fifteen feet high. It took a pair of technicians a fortnight to build it. For the artist responsible it was an opportunity to create a monument that brings together the themes of science and nature; Charles Jencks, Sculptor said "It embraces the trees, you can sit on it and the ground grows up and it twists out of the ground. So it's truly interacting with living things like the turf, and that idea was behind it and I think it does celebrate life and DNA. " Tony Badger, Master of Clare, said: "It is wonderful to have this lasting reminder of his achievements while he* was at Clare and the enormous contribution he* and Francis Crick have made to our understanding of life on earth. " * James Watson.

Books by Francis Crick

Books about Francis Crick and the structure of DNA discovery

See also

References

  1. ^ How I Got Inclined Towards Atheism
  2. ^ The Nobel Prize in Physiology or Medicine 1962. The Neural Correlates of Consciousness (NCC can be defined as the minimal neuronal mechanisms jointly sufficient for any one The Molecular structure of Nucleic Acids A Structure for Deoxyribose Nucleic Acid was an article published by James D The Crick Brenner et al experiment was a Scientific experiment performed in 1961 by Francis Crick and Sydney Brenner. Nobel Prize Site for Nobel Prize in Physiology or Medicine 1962.
  3. ^ Francis Crick: Discoverer of the Genetic Code (Eminent Lives) by Matt Ridley, (2006); HarperCollins Publishers; 192 pp, ISBN 0-06-082333-X. The Hon Matthew White Ridley (born February 7, 1958, in Northumberland) is an English science
  4. ^ Shermer, Michael (2004-07-30). Michael Brand Shermer (born September 8, 1954 in Glendale California) is an American science writer historian of science founder of The Skeptics "MMIV" redirects here For the Modest Mouse album see " Baron von Bullshit Rides Again " Events 1419 - First Defenestration of Prague. 1502 - Christopher Columbus lands at Guanaja in the Bay Islands off Astonishing Mind: Francis Crick 1916–2004. Skeptics Society. Retrieved on 2006-08-25. Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. Events 1248 - The Dutch city of Ommen receives city rights and fortification rights from Otto III the
  5. ^ a b Chapters 1 and 2 of What Mad Pursuit: A Personal View of Scientific Discovery by Francis Crick (Basic Books reprint edition, 1990 ISBN 0-465-09138-5) provide Crick's description of his early life and education
  6. ^ Page 13 of What Mad Pursuit by Francis Crick.
  7. ^ Nature, Obituary, volume 430, 19 August 2004, p 845
  8. ^ Bio at Wellcome Trust
  9. ^ "Francis Crick, Co-Discoverer of DNA, Dies at 88", New York Times, July 30, 2004. Events 1419 - First Defenestration of Prague. 1502 - Christopher Columbus lands at Guanaja in the Bay Islands off "MMIV" redirects here For the Modest Mouse album see " Baron von Bullshit Rides Again " Retrieved on 2007-07-21. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 356 BC - Herostratus sets fire to the Temple of Artemis in Ephesus, one of the Seven Wonders of the World  "Francis H. C. Crick, co-discoverer of the structure of DNA, the genetic blueprint for life, and the leading molecular biologist of his age, died on Wednesday night in a hospital in San Diego. He was 88. He died after a long battle with colon cancer, said Andrew Porterfield, a spokesman for the Salk Institute, where he worked. " 
  10. ^ Page 17 of What Mad Pursuit by Francis Crick.
  11. ^ Page 18 of What Mad Pursuit by Francis Crick.
  12. ^ Page 22 of What Mad Pursuit by Francis Crick.
  13. ^ a b Page 30 of The Eighth Day of Creation: Makers of the Revolution in Biology by Horace Freeland Judson published by Cold Spring Harbor Laboratory Press (1996) ISBN 0-87969-478-5. Horace Freeland Judson (born April 21 1931 is a Historian of Molecular biology and the author of several books including The Eighth Day of Creation,
  14. ^ Page 25 of What Mad Pursuit by Francis Crick.
  15. ^ a b Page 32 of What Mad Pursuit by Francis Crick.
  16. ^ Pages 33-34 of What Mad Pursuit by Francis Crick.
  17. ^ a b Chapter 4 of What Mad Pursuit by Francis Crick.
  18. ^ Cochran W, Crick FHC and Vand V. (1952) "The Structure of Synthetic Polypeptides. I. The Transform of Atoms on a Helix", Acta Cryst. , 5, 581-586.
  19. ^ See "Evidence for the Pauling-Corey alpha-Helix in Synthetic Polypeptides" (1952) Nature Volume 169 pages 234-235 (download PDF). Nature is a prominent Scientific journal, first published on 4 November 1869 Crick's scientific publications and letters are in the list of Francis Crick's Papers from the Wellcome Library or the National Library of Medicine. The Wellcome Trust was established in 1936 as an independent charity funding research to improve human and animal health The United States National Library of Medicine ( NLM) operated by the United States federal government, is the world's largest Medical library.
  20. ^ Molecular structure of Nucleic Acids by James D. Watson and Francis H. C. Crick. Nature 171, 737–738 (1953). Nature is a prominent Scientific journal, first published on 4 November 1869
  21. ^ Francis Crick's 1962 Biography from the Nobel foundation.
  22. ^ Crick traced his interest in the physical nature of the gene back to the start of his work in biology, when he was in the Strangeways laboratory; Page 22 of What Mad Pursuit by Francis Crick.
  23. ^ In The Eighth Day of Creation, Horace Judson describes the development of Watson's thinking about the physical nature of genes. Horace Freeland Judson (born April 21 1931 is a Historian of Molecular biology and the author of several books including The Eighth Day of Creation, On page 89, Judson explains that by the time Watson came to Cambridge, he believed genes were made of DNA and he hoped that he could use x-ray diffraction data to determine the structure. Horace Freeland Judson (born April 21 1931 is a Historian of Molecular biology and the author of several books including The Eighth Day of Creation, Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known
  24. ^ Page 22 of What Mad Pursuit by Francis Crick.
  25. ^ Page 90, In The Eighth Day of Creation by Horace Judson.
  26. ^ Linu Pauling and the Race for DNA: A Documentary History Special Collections, The Valley Library, Oregon State University.
  27. ^ Chapter 3 in The Eighth Day of Creation by Horace Judson.
  28. ^ "DNA helix" by M. F. Perutz, J. T. Randall, L. Thomson, M. H. Wilkins J. D. Watson in Science journal Science (1969) Volume 164 pages 1537-1539. Entrez PubMed 5796048
  29. ^ Franklin's citation to the earlier work of W. The Entrez Global Query Cross-Database Search System is a powerful Federated search engine or Web portal that allows users to search many discrete Health sciences T. Astbury is in "Molecular Configuration in Sodium Thymonucleate" by R. Franklin and R. G. Gosling in Nature (1953) volume 171 pages 740-741. Nature is a prominent Scientific journal, first published on 4 November 1869 The full text of this article is available for download in PDF format.
  30. ^ The Double Helix: A Personal View by Francis Crick (1974) in Nature Volume 248, page 766-769. Nature is a prominent Scientific journal, first published on 4 November 1869 PMID:4599081
  31. ^ See Chapter 3 of The Eighth Day of Creation: Makers of the Revolution in Biology by Horace Freeland Judson published by Cold Spring Harbor Laboratory Press (1996) ISBN 0-87969-478-5. Judson also lists the publications of W. T. Astbury that described his early X-ray diffraction results for DNA.
  32. ^ "Genetical implications of the structure of deoxyribonucleic acid" by J. D. Watson and F. H. C. Crick (1953) in Nature Volume 171 pages 964-967.
  33. ^ *Morgan, G. J. (2003). "Historical Review: Viruses, Crystals and Geodesic Domes". Trends in Biochemical Sciences 28: 86-90.  .
  34. ^ "The structure of collagen" by A Rich and F. H. C. Crick in Nature (1955) Volume 176, pages 915-916.
  35. ^ "On Degenerate Templates and the Adaptor Hypothesis: A Note for the RNA Tie Club" by Francis Crick (1956).
  36. ^ "On protein synthesis" by F. H. C. Crick in Symp Soc Exp Biol. (1958);12:138-63.
  37. ^ "General nature of the genetic code for proteins" by F. H. C. Crick, L. Barnett, S. Brenner and R. J. Watts-Tobin in Nature (1961) Volume 192 pages 1227-1232.
  38. ^ "The Croonian lecture, 1966. The genetic code" by F. H. C. Crick in Proc R Soc Lond B Biol Sci. (1967) Volume 167 pages 331-347.
  39. ^ Chapter 3 of The Eighth Day of Creation: Makers of the Revolution in Biology by Horace Freeland Judson published by Cold Spring Harbor Laboratory Press (1996) ISBN 0-87969-478-5.
  40. ^ Maurice Wilkins; The Third Man of the Double Helix by Maurice Wilkins (ISBN 0-19-860665-6). Wilkins provides a detailed account of the fact that Franklin's results were interpreted as most likely indicated three, and possibly four, polynucleotide strands in the DNA molecule.
  41. ^ Rosalind Franklin: The Dark Lady of DNA by Brenda Maddox. (2002) ISBN 0-06-018407-8.
  42. ^ McKie, Robin. "Genius was in his DNA", The Guardian, 2006-09-17. Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. Events 1176 - The Battle of Myriokephalon is fought 1462 - The Battle of Świecino (or Battle of Żarnowiec Retrieved on 2007-08-04. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 70 - The Destruction of the Second Temple in Jerusalem by the Romans.  
  43. ^ Of Molecules and Men (Prometheus Books, 2004; original edition 1967) ISBN 1-59102-185-5. A portion of the book was published as "The Computer, the Eye, the Soul" in Saturday Review (1966): 53-55.
  44. ^ Francis Crick refers to himself as a skeptic and an agnostic with "a strong inclination towards atheism", see reference 42.
  45. ^ Wellcome Archive article on Crick see also eg Telegraph Article
  46. ^ "Molecular Biology in the Year 2000" by Francis Crick in Nature Volume 228 (1970) pages 613-615.
  47. ^ "The serotonin system and spiritual experiences" by J. Borg, B. Andree, H. Soderstrom and L. Farde in The American Journal of Psychiatry (2003) Volume 160, pages 1965-1969. Entrez PubMed 14594742
  48. ^ "The origin of the genetic code" by F. The Entrez Global Query Cross-Database Search System is a powerful Federated search engine or Web portal that allows users to search many discrete Health sciences H. C. Crick in J Mol Biol. (1968) Volume 38 pages 367-379. Entrez PubMed 4887876
  49. ^ "Directed Panspermia” by Francis Crick and Leslie E Orgel in Icarus (1973) Volume 19 pages 341-346. The Entrez Global Query Cross-Database Search System is a powerful Federated search engine or Web portal that allows users to search many discrete Health sciences ICARUS International Journal of Solar System Studies is a premier Scientific journal dedicated to the field of Planetary science. Crick later wrote a book about directed panspermia called Life Itself (Simon & Schuster, 1981) ISBN 0-671-25562-2
  50. ^ a b "Anticipating an RNA world. Some past speculations on the origin of life: where are they today?" by L. E. Orgel and F. H. C. Crick in FASEB J. (1993) Volume 7 pages 238-239.
  51. ^ Page 145 of What Mad Pursuit by Francis Crick.
  52. ^ "Towards a Neurobiological Theory of Consciousness" by Francis Crick and Christof Koch in Seminars in the Neurosciences (1990): Volume 2 pages 263-275.
  53. ^ The Astonishing Hypothesis: The Scientific Search For The Soul by Francis Crick. (Scribner reprint edition, 1995) ISBN 0-684-80158-2
  54. ^ Watson's book The Double Helix painted a vivid image of Crick, starting with the famous line, "I have never seen Francis Crick in a modest mood. " The first chapter of Horace Judson's book The Eighth Day of Creation describes the importance of Crick's talking and his boldness in his scientific style. Horace Freeland Judson (born April 21 1931 is a Historian of Molecular biology and the author of several books including The Eighth Day of Creation,
  55. ^ Describing Crick's influence on his scientific colleagues, Francis Crick Papers archivist Chris Beckett wrote of the importance of, ". . . . . Crick's presence and eloquence —direct and beguiling, by all accounts in the archive— at conference after conference, through formal lectures, extempore summaries, informal meetings and individual conversations. Indeed, one has the impression that it was through these frequent persuasive moments of personal delivery and purposive conversations that Crick was most influential. " Also described as an example of Crick's wide recognition and public profile are some of the times Crick was addressed as "Sir Francis Crick" with the assumption that someone so famous must have been knighted.
  56. ^ Eagleman, D. M. (2005). Obituary: Francis H. C. Crick (1916-2004). Vision Research. 45: 391-393.
  57. ^ See The Twentieth-Century Darwin by Mark Steyn published in The Atlantic Monthly October 2004. The Atlantic (formerly known as The Atlantic Monthly) is an American Magazine founded in Boston in 1857 Crick's description of his religious views (as given in What Mad Pursuit, see Chapter 1 of reference #2, above) after having told his mother that he no longer wished to attend church services: ". . . from then on I was a skeptic, an agnostic with a strong inclination toward atheism. Atheism "
  58. ^ Francis Crick: Discoverer of the Genetic Code by Matt Ridley, published in 2006 by HarperCollins Publishers.
  59. ^ Francis Crick's controversial archive on first public display at the Wellcome Library and Information Services. The Wellcome Trust was established in 1936 as an independent charity funding research to improve human and animal health Archivists' comments on Crick's views.
  60. ^ Intelligent design tied to creationism in Dover trial by Bill Toland for the Pittsburgh Post-Gazette (September 28, 2005). The Pittsburgh Post-Gazette, also known simply as the "PG" is the largest daily Newspaper serving metropolitan Pittsburgh,
  61. ^ The Astonishing Hypothesis
  62. ^ Amicus Curiae Brief of 72 Nobel Laureates, 17 State Academies of Science, and 7 Other Scientific Organization in Support of Appellees filed in the case Edwards v. Aguillard before the U. S. Supreme Court (1986).
  63. ^ Press release from the British Humanist Association: Darwin Day a natural holiday? (February 12, 2003).
  64. ^ The Francis Crick Lecture (2003): The Royal Society website. The Royal Society of London for the Improvement of Natural Knowledge, known simply as The Royal Society, is a Learned society for science that was founded in 1660 Retrieved 12 July 2006
  65. ^ Back and Forward: From University to Research Institute; From Egg to Adult, and Back Again by Professor Sir John Gurdon, Francis Crick Graduate Lectures, 29th November 2005. University of Cambridge. The University of Cambridge (often Cambridge University) located in Cambridge, England, is the second-oldest university in the Retrieved 12 July 2006.
  66. ^ A Life in Science by Dr Tim Hunt, Francis Crick Graduate Lectures, 29th June 2005. University of Cambridge. The University of Cambridge (often Cambridge University) located in Cambridge, England, is the second-oldest university in the Retrieved 12 July 2006.

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Persondata
NAMECrick, Francis Harry Compton
ALTERNATIVE NAMES
SHORT DESCRIPTIONmolecular biologist,
DATE OF BIRTH8 June 1916(1916-06-08)
PLACE OF BIRTHWeston Favell, Northamptonshire, England
DATE OF DEATH28 July 2004
PLACE OF DEATHSan Diego, California, U.S.
Molecular biology is the study of Biology at a molecular level Events 68 - The Roman Senate accepts emperor Galba. 536 - St Silverius becomes Pope (probable Year 1916 ( MCMXVI) was a Leap year starting on Saturday (link will display the full calendar of the Gregorian calendar (or a Leap year Weston Favell is a village and district of Northampton in the English county of Northamptonshire. Northamptonshire (or archaically the County of Northampton; abbreviated Northants England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland Events 1540 - Thomas Cromwell is executed at the order of Henry VIII of England on charges of Treason. "MMIV" redirects here For the Modest Mouse album see " Baron von Bullshit Rides Again " California ( is a US state on the West Coast of the United States, along the Pacific Ocean. The United States of America —commonly referred to as the
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