(3 points)
28. Scientists have never seen the ancient horses shown in Figure 16-4. What do you think was the
main type of evidence scientists used to prepare these diagrams?

American scientist, linus pauling, was one of many scientists racing to discover the molecular structure of dna. pauling initially thought that the molecule was a triple helix. later, james watson and francis crick unveiled their double helix model, which turned out to be an accurate description of the molecule's shape. why did watson and crick succeed when pauling failed?