Benzer's work influenced many other scientists of his time (see Phage group). In his molecular biology period, Benzer dissected the fine structure of a single gene, laying down the ground work for decades of mutation analysis and genetic engineering, and setting up a paradigm using the rII phage that would later be used by Francis Crick and Sydney Brenner to establish the triplet code of DNA. In addition, Benzer's mapping technique was taken up by Richard Feynman.