COLD SPRING HARBOR, N.Y. – If it were not for a group of enzymes called topoisomerases, DNA would become a knotted, coiled, dysfunctional mess inside of a cell as it gets twisted, rolled, unzipped, ...

James D. Watson, whose co-discovery of the twisted-ladder structure of DNA in 1953 helped light the long fuse on a revolution in medicine, crimefighting, genealogy and ethics, has died. He was 97. The ...

James Watson, Co-Discoverer of the Double-Helix Shape of DNA, Has Died at Age 97 James D. Watson, whose co-discovery of the twisted-ladder structure of DNA in 1953 helped light the long fuse on a ...

Watson shared a 1962 Nobel Prize with Francis Crick and Maurice Wilkins for discovering that deoxyribonucleic acid, or DNA, is a double helix, consisting of two strands that coil around each other to ...