To actually visualize the double-helical structure of DNA, researchers require special ... process that attaches the chromosomes to a glass slide and stains or "paints" them.

But James Watson and Francis Crick's claim was a valid one, for they had in fact discovered the structure of DNA, the chemical that encodes instructions for building and replicating almost all ...

Scientists who study molecular structures have known this ever since James Watson saw Photo 51 and went on to deduce DNA's structure with Francis Crick. Researchers today continue to rely on ...