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The Journal of Heredity 1992:83(2):100-104
© 1992 The American Genetic Association 83:100-104

research-article

Response to Selection for Increased Hybridization Between Drosophila melanogaster Females and D. simulans Males

J. I. Izquierdo, M. C. Carracedo, R. Piñeiro, and P. Casares

Departamento de Genetica, Universidad de Oviedo 33071 Oviedo, Spain

Abstract

Females of Drosophila melanogaster and males of D. simulans hybridizing in a non-choice condition were artificially selected for 12 generations. The frequency of hybridization increased from 10% to 79%. Response to selection occurred in both species, particularly in D. melanogaster. Female receptivity was the primary sexual trait that accounted for breaking up sexual isolation in these species, but it remained unclear which elements of the D. simulans male courtship were involved.


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