Evolution of the Number of Sexes.

  title={Evolution of the Number of Sexes.},
  author={Yoh Iwasa and Akira Sasaki},
  journal={Evolution; international journal of organic evolution},
  volume={41 1},
In sexually reproducing isogamous organisms, gametes (or diploid cells in ciliates) are classified into two or more groups called sexes, and mating occurs only between cells of different sexes. We have studied the evolutionary stability of the number of sexes maintained in a population by examining population-genetic models. For models in which the diploid genome determines the sex of conjugal cells, a one-locus system with three alleles of pecking-order dominance is assumed. Unlike traditional… CONTINUE READING

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