Pasteur and the phage community
Wollman entered post-war research at the Pasteur Institute, studying bacteria and bacteriophages. A period at Caltech brought him into contact with Delbrück and the phage group, to which he contributed his bacteriological expertise.
References: [1]
Interrupted mating and gene order
During the 1950s Wollman and Jacob examined genetic transfer during bacterial conjugation. Interrupting mating at different times and testing recipient markers allowed them to infer the order in which genes entered cells and investigate bacterial chromosome organisation.
Lysogeny and institutional reform
Wollman also studied prophages and their relationship with host genetics. In 1966 he became Pasteur’s vice director responsible for research, helping reorganise research and teaching as the institute adapted to molecular biology.
References: [1]