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Published November 1, 1933 | public
Journal Article Open

Role of the autosomes in the Drosophila pseudoobscura hybrids


Lancefield(1) discovered that the species Drosophila pseudoobscura consists of two races, called race A and race B, respectively. Completely sterile males and partially fertile females appear in the offspring if the races are intercrossed. Males coming from the cross, B♀ X A♂, have rudimentary testes that are smaller in size than the testes of normal males. Testes of the A♀ X B♂ hybrid males are normal in size but incapable of producing functional sperm.

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© 1933 by the National Academy of Sciences. Communicated October 9, 1933.


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