Selection and the "sex-ratio" Polymorphism in Natural Populations of Drosophila Pseudoobscura.

  • A. T. Beckenbach
  • Published 1996 in
    Evolution; international journal of organic…


"Sex-ratio" (SR) is a naturally occurring X-linked meiotic drive system, where the SR-X chromosome is transmitted to nearly all progeny of SR males. It occurs at frequencies of up to 25% in some populations of Drosophila pseudoobscura. Because of the twofold drive advantage, SR should rapidly fix in populations, causing the extinction of the species, unless… (More)
DOI: 10.1111/j.1558-5646.1996.tb03888.x


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