A year after the initial discovery of bacterial conjugation, Joshua Lederberg married Esther Zimmer, who had just earned a master’s degree in genetics from Stanford University while working in Tatum’s lab. The young Lederberg team — Joshua was 22 and Esther 24 — moved to the University of Wisconsin, where they began to explore the strange world of bacteria sex.Esther Lederberg was an exceptionally talented bench scientist.
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