<P> The first reports of a double helix molecular model of B - DNA structure were made by James Watson and Francis Crick in 1953 . That same year , Maurice F. Wilkins , A. Stokes and H.R. Wilson , reported the first X-ray patterns of in vivo B - DNA in partially oriented salmon sperm heads . </P>
who collected the data used to describe the current model for the molecular structure of dna
James Watson Francis Crick