15 feb 1953 año - 1953 James Watson and Francis Crick
Descripción:
 in 1953 of the double helix, the twisted-ladder structure of deoxyribonucleic acid (DNA), by James Watson and Francis Crick marked a milestone in the history of science and gave rise to modern molecular biology, which is largely concerned with understanding how genes control the chemical processes within 
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15 feb 1953 año
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 ~ 72 years ago