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. 1990 Mar;87(5):2013–2017. doi: 10.1073/pnas.87.5.2013

Two-locus autosomal sex determination: on the evolutionary genetic stability of the even sex ratio.

U Liberman 1, M W Feldman 1, I Eshel 1, S P Otto 1
PMCID: PMC53615  PMID: 2308959

Abstract

In two-locus models of sex determination, there are two kinds of interior (polymorphic) equilibria. One class has the even sex ratio, and the other has equal allele frequencies in the two sexes. Equilibria of the second class may exhibit linkage disequilibrium. The condition for external stability of these second-class equilibria to invasion by a new allele is that the appropriately averaged sex ratio near the equilibrium be moved closer to the even sex ratio than the average among the resident genotypes. However, invasion by a new chromosome depends on the recombination fraction in a way that appears to preclude general results about the evolutionary genetic stability of the even sex ratio in this situation.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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