There’s more to dna than just the double helix we know and love: under some conditions this familiar molecule can take on ...

Description: dna isn’t the simple, loose double-helix you might see in a biology textbook, so isolating single strands of it ...

(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 ...

James D. Watson, the brilliant but controversial American biologist whose 1953 discovery of the structure of DNA, the molecule of heredity, ushered in the age of genetics and provided the foundation ...