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Published September 1, 1931 | public
Journal Article Open

Evidence for multiple sex factors in the X-chromosome of Drosophila melanogaster

Abstract

The data presented here permit a decision between two alternative hypotheses regarding sex determination in Drosophila melanogaster. Bridges(1,2,3) has shown that the sex of an individual in this form is determined by a relation between the number of the X-chromosomes and that of the autosomes. From his studies of a variety of sex types (table 1), he has concluded that the X-chromosome turns the course of development toward femaleness, the autosomes toward maleness.

Additional Information

© 1931 by the National Academy of Sciences. Communicated July 21, 1931.

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