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Hybrid Dysgenesis in Drosophila melanogaster

1980; American Association for the Advancement of Science; Volume: 207; Issue: 4431 Linguagem: Inglês

10.1126/science.6766221

1095-9203

J. C.. Bregliano, Georges Picard, Alain Bucheton, Alain Pélisson, Jean-Marc Lavige, Ph. L’Héritier,

Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities

Several dysgenic traits may occur within the Drosophila melanogaster species as a result of crosses between different strains. Crossing two mutually interacting categories, named inducer and reactive, may lead, among other abnormalities, to a specific kind of female sterility that has proved useful for investigating the genetic factors involved in the interaction. The reactive state appears to result from a cytoplasmic state ultimately controlled by a chromosomal polygenic system. The inducer character is determined by a chromosomal factor that exhibits all characteristics of a transposable element. Overall, the data contribute to clarification of mutator activities in D. melanogaster and open new opportunities to investigate unusual genetic mechanisms.