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OCR: FRANCIS CRICK b. 1916) NGLISH biologist Francis Crick noted for his codiscovery of the structure of DNA (deoxyribonucleic acid) the means by which characteristics are passed on from parents to offspring His colleague was the American biologist James Watson ih 1928 DNA isa complex organic (carbon- containing) molecule present in every living cell, Crick started researching the properties of organic molecules 11 1947 In 1953 he and Watson discovered that the DNA molecule is probably shaped like double helix, or spiral ladder This was the major breakthrough in our understanding of genetics. Crick and Watson shared the 1962 Nobel Prize for medicine and physiology. ALSO STORY atson physi ology