51�Թ�

By the early 1970s, he had helped provide important experimental confirmations of the Watson-Crick model and cast light into areas that remained mysterious.

While the Watson-Crick model had achieved widespread acceptance and went virtually without challenge, Dr. Rich’s picture and the additional confirmation it provided was “very comforting,” Watson said.

Implicit in the Watson-Crick model were the workings of DNA's other essential function: how it orders the production of proteins.