Calvin Bridges (1889-1938), US geneticist. Bridges worked on sex-linked traits in the fruit fly (Drosophila melanogaster), producing results that sugg


Calvin Bridges (1889-1938), US geneticist. Bridges worked on sex-linked traits in the fruit fly (Drosophila melanogaster), producing results that suggested that chromosomes contained units of heredity (genes). Photographed circa 1931-3932.


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