US geneticist Leslie Clarence Dunn (1893-1974) and Russo-French geneticist Boris Ephrussi (1901-1971). Dunn's work established ideas of gene interacti


US geneticist Leslie Clarence Dunn (1893-1974) and Russo-French geneticist Boris Ephrussi (1901-1971). Dunn's work established ideas of gene interaction, fertility factors, and allelic distribution. Ephrussi's research helped transform mammalian, and especially human, genetics. Photographed during the Genetics Society of America Meeting, in August 1941.


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