A New Look at Sex Determination in Poeciliid Fishes

  • Klaus D. Kallman
Part of the Monographs in Evolutionary Biology book series (MEBI)


The recent increased interest in sex-determining mechanisms can be traced directly to Wachtel’s concept that the H-Y antigen is the primary testis organizer. There have been several comprehensive reviews dealing with genetic mechanisms of sex determination and sex differentiation, but all of these deal largely with the mammalian literature and pay only lip service to the other classes of vertebrates (J.W. Gordon and Ruddle, 1981; Haseltine and Ohno, 1981; McCarrey and Abbot, 1979; Ohno, 1979; Wachtel and Ohno, 1979). Of particular interest to geneticists are several cases of atypical sex determination in mammals, including humans, in which an autosomal gene causes the testicular differentiation of XX individuals. This has raised the question as to the location of the male-determining gene.


Pigment Gene Poeciliid Fish Xiphophorus Maculatus Myopus Schisticolor Autosomal Factor 


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Copyright information

© Plenum Press, New York 1984

Authors and Affiliations

  • Klaus D. Kallman
    • 1
  1. 1.Genetics Laboratory, Osborn Laboratories of Marine Sciences, New York AquariumNew York Zoological SocietyBrooklynUSA

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