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10 de dic. de 2003 · Watson and Crick's postulation in 1953, exactly 50 years ago, of a double helical structure for DNA, heralded a revolution in our understanding of biology at the molecular level. The fact that it ...
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25 de abr. de 2013 · Aquí nos gustaría mostrarte una descripción, pero el sitio web que estás mirando no lo permite.
3 de may. de 2018 · The path to the discovery of the molecular structure of DNA was one of the most dramatic in the history of science. This volume is the complete story of that landmark event. The roots of the story of the genetic "secret of life" are in nineteenth-century molecular biology; in 1869, a substance which corresponded to DNA, "nuclein," was discovered.
Left panel: illustration of the antiparallel structure of DNA. A short segment of DNA double helix is shown, composed of two DNA strands held together by hydrogen bonds between the bases. The strand on the left has a phosphate group exposed at its top (5' end) and a hydroxyl group exposed at its bottom (3' end).
Description. Introduced by science historian Evelyn Fox Keller, the film begins with a clip from 'The Cambridge Story' (1953?), showing Francis Crick and James Watson, two of the scientists responsible for the discovery of the structure of DNA. The film continues with many other archive clips which include Maurice Wilkins explaining his ...
The Double Helix. The discovery of the structure of DNA. By James D. Watson. SSPL/Getty. January 1968 Issue. Editor’s Note: Nobel Prize winner James D. Watson was a brash twenty-three-year-old ...
