<P> The deciphering of the structure of DNA by Watson and Crick in 1953 suggested that each strand of the double helix would serve as a template for synthesis of a new strand . However , there was no way of knowing how the newly synthesized strands might combine with the template strands to form two double helical DNA molecules . The semiconservative model seemed most reasonable since it would allow each daughter strand to remain associated with its template strand . The semiconservative model was supported by the Meselson - Stahl experiment and other even more revealing experiments that allowed for autoradiographic visualization of the distribution of old and new strands within replicated chromosomes . </P>
who proposed the first accurate model of dna
Watson Crick