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 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 ...

Diagrams: Short section of DNA, 1951 -- Chemical structures of the DNA bases, 1951 -- Covalent bonds of the sugar-phosphate backbone -- Schematic view of a nucleotide -- Mg** ions binding phosphate ...

FILE - A model of a DNA molecule is displayed in the New York office of the Sloan-Kettering Institute for Cancer Research on Oct. 18, 1962. The discovery of DNA’s “twisted ladder” structure 70 years ...

Rediscovered letters and postcards highlight the fierce competition among scientists who discovered DNA's famous double-helix structure and unraveled the genetic code. Francis Crick and James D.

April marks the 50th anniversary of the discovery by James Watson and Francis Crick of the double helix structure of DNA — setting the stage for an explosion in our understanding of the building ...

“Double Helix,” at Bay Street Theater, illuminates the British scientist’s contributions, which became the basis for James Watson and Francis Crick’s 1953 breakthrough. By Lauren Rosenfield During the ...