Add Yahoo as a preferred source to see more of our stories on Google. James D. Watson, whose co-discovery of the twisted-ladder structure of DNA in 1953 helped light the long fuse on a revolution in ...

At school, it's often presented as a tidy double helix but scientists are revealing the varied and intricate shapes of DNA molecules. DNA is a molecule found in just about every living cell. Because ...

(AP) - 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 ...

That realization was a breakthrough. It instantly suggested how hereditary information is stored and how cells duplicate their DNA when they divide. The duplication begins with the two strands of DNA ...