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1. www.sciencefocus.com › the-human-body › dna-aDNA: a timeline of discoveries - BBC Science Focus Magazine

   www.sciencefocus.com › the-human-body › dna-a

   1920s – Phoebus Levene discovers nucleotides – the combination of a sugar, base and phosphate group – and suggests they form short lengths of DNA called ‘tetranucleotides’. 1937 – Florence Bell arrives in William Astbury’s lab and takes the first X-ray images of DNA.

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3. www.sciencefocus.com › the-human-bodyUnderstanding DNA: Five key scientists who unravelled the helix

   www.sciencefocus.com › the-human-body

   The X-ray crystallographer and biophysicist provided much of the experimental evidence for the structure of DNA, in the form of Photo 51 (below), before switching her focus to viruses at Birkbeck College. She died of cancer at the age of 38. Photo 51 © KCL. 3.

4. sciencehistory.org › education › scientificFrancis Crick, Rosalind Franklin, James Watson, and Maurice ...

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   Jul 28, 2022 · The background for the work of the four scientists was formed by several scientific breakthroughs: the progress made by X-ray crystallographers in studying organic macromolecules; the growing evidence supplied by geneticists that it was DNA, not protein, in chromosomes that was responsible for heredity; Erwin Chargaff’s experimental finding ...

5. www.sciencedirect.com › science › articleThe Discovery of the DNA Double Helix - ScienceDirect

   www.sciencedirect.com › science › article

   Jan 2, 2004 · Fifty years ago, on 25th April 1953, there appeared three papers in the journal, Nature, which changed our view of the world. The structure of the DNA double helix, with its complementary base-pairing, is one of the greatest discoveries in biology in the 20th Century.

6. www.savemyexams.com › a-level › biologyThe Watson Crick Model | AQA A Level Biology Revision Notes 2017

   www.savemyexams.com › a-level › biology

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   Jan 5, 2010 · Evaluating the Watson-Crick Model. Watson and Crick were two scientists who worked together to confirm the double-helix structure of DNA in 1953. Watson and Crick also came up with a model by which DNA might be replicated: This theory was called semi-conservative DNA replication.

7. www.nature.com › articles › d41586/023/01313-5What Rosalind Franklin truly contributed to the discovery of ...

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   Apr 25, 2023 · What Rosalind Franklin truly contributed to the discovery of DNA’s structure. Franklin was no victim in how the DNA double helix was solved. An overlooked letter and an unpublished news...

8. People also ask

   How did the discovery of DNA change our view of the world?

   • 1.1. Introduction Fifty years ago, on 25th April 1953, there appeared three papers in the journal, Nature, which changed our view of the world. The structure of the DNA double helix, with its complementary base-pairing, is one of the greatest discoveries in biology in the 20th Century.

   The Discovery of the DNA Double Helix - ScienceDirect

   www.sciencedirect.com/science/article/pii/S0022283603014128

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   Why was the Cambridge DNA structure breakthrough so important?

   • The DNA structure breakthrough at Cambridge has led to world-changing advances in many fields, not least in biological research. But the discovery was only possible because of the work of a host of talented scientists.

   Discovering 'the secret of life' - 70th anniversary of DNA double helix

   www.cam.ac.uk/stories/DNA-structure-discovery-cambridge-70th-anniversary

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   Who discovered the a and B form of DNA?

   • Figure 18. Early diagrams of the structures of the A and B forms of DNA (GB Sutherland and M Tsuboi, Proc. Roy. Soc. A 1957, 239, 446, the A form after Wilkins et al. Nature, October 1953, 172, p. 759). For, despite her discovery of the simpler B pattern, Franklin at first directed her attention mostly to the A form.

   The Discovery of the DNA Double Helix - ScienceDirect

   www.sciencedirect.com/science/article/pii/S0022283603014128

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   How did Watson discover the double helix?

   • Lore has it that the decisive insight for the double helix came when Watson was shown an X-ray image of DNA taken by Franklin — without her permission or knowledge. Known as Photograph 51, this image is treated as the philosopher’s stone of molecular biology, the key to the ‘secret of life’ (not to mention a Nobel prize).

   What Rosalind Franklin truly contributed to the discovery of DNA’s

   www.nature.com/articles/d41586-023-01313-5

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   Who led to the discovery of DNA?

   • The discovery of DNA is one of our greatest scientific achievements – these are scientists who led to its discovery. (1898-1961) Astbury was a British molecular biologist and physicist who spent much of his working life in Leeds.

   Understanding DNA: Five key scientists who unravelled the helix

   www.sciencefocus.com/the-human-body/understanding-dna-five-key-scientists-who-unravelled-the-helix

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   How did Watson and Crick contribute to X-ray crystallography?

   • "A significant point is that Watson and Crick were both theorists, they didn’t do any of the experiments that resulted in the X-ray crystallography images, which they set about interpreting. There were lots of people who contributed to the knowledge of the size of the molecules that had to be fitted together, as they eventually were.

   Discovering 'the secret of life' - 70th anniversary of DNA double helix

   www.cam.ac.uk/stories/DNA-structure-discovery-cambridge-70th-anniversary

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9. www.cam.ac.uk › stories › DNA-structure-discoveryDiscovering 'the secret of life' - 70th anniversary of DNA ...

   www.cam.ac.uk › stories › DNA-structure-discovery

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   Feb 28, 2023 · The DNA structure breakthrough at Cambridge 70 years ago today has led to world-changing advances in many fields. But the discovery was only possible because of the work of a host of talented scientists.