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Photo 51 is an X-ray based fiber diffraction image of a paracrystalline gel composed of DNA fiber [1] taken by Raymond Gosling, [2] [3] a postgraduate student working under the supervision of Maurice Wilkins and Rosalind Franklin at King's College London, while working in Sir John Randall's group.
25 Ιαν 2017 · X-ray diffraction. monocristal. tridimensional structure. Author Information. Show +. 1. Introduction. In 1953, James Watson and Francis Crick revealed the double helical structure of DNA using the results of Rosalyn Franklin obtained by X-ray scattering on natural filaments formed by DNA molecules [1].
25 Απρ 2023 · 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.
1 Φεβ 2018 · Rosalind Franklin used X-ray diffraction to determine the structure of DNA molecules. One of her best X-ray pictures is numbered Photo 51 and is shown in Fig. 1(a). This photo was instrumental to J. D. Watson and F. Crick in deducing the double-helix model of DNA.
11 Οκτ 2016 · The discovery of the structure of DNA in 1953 was made possible by Dr Rosalind Franklin’s X-ray diffraction work at King’s. Her creation of the famous Photo 51 demonstrated the double-helix structure of deoxyribonucleic acid: the molecule containing the genetic instructions for the development of all living organisms.
1 Μαΐ 2007 · A step-by-step method of teaching the X-ray diffraction analysis of DNA using the approach employed by James Watson, Francis Crick, Maurice Wilkins, Rosalind Franklin, and Raymond Gosling at an upper undergraduate and graduate level is described.
25 Απρ 2020 · The discovery of the structure of DNA in 1953 was enabled by Dr Rosalind Franklin’s X-ray diffraction work at King’s. Dr Franklin joined the laboratory of John Randall at King’s in 1950 with a PhD from Cambridge and X-ray diffraction experience in Paris.
