NDLI: On the optimal sex ratio.

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On the optimal sex ratio.

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On the optimal sex ratio.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Karlin, S. Lessard, S.
Abstract	The equilibrium structures for various multiallele sex-determining genetic models of panmictic populations with sex expression depending on the genotypes of either the zygote or a parent are described. Even-sex-ratio equilibrium surfaces can exist apart from equilibrium points having coincident male and female allelic frequency sets. The latter (symmetric) equilibrium states entail biased sex ratios. A stable symmetric equilibrium and an even-sex-ratio equilibrium segregating the same alleles cannot coexist. The tendency to evolve toward an even-sex ratio is embodied by the following optimality property: starting from an equilibrium having a biased sex ratio, mutant sex-determining alleles can accumulate only in the case in which in the augmented system all attainable equilibrium states have a sex ratio closer to one to one.
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	19
Volume Number	80
Language	English
Publisher	National Academy of Sciences
Publisher Date	1983-10-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Biological Evolution Sex Ratio Alleles Animals Mathematics Models, Genetic Plants Genetics Sex Determination Analysis Species Specificity Research Support, U.S. Gov't, Non-P.H.S. Research Support, U.S. Gov't, P.H.S. Multidisciplinary
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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