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Polymorphism from environmental heterogeneity: models are only robust if the heterozygote is close in fitness to the favoured homozygote in each environment

  • Rolf F. Hoekstra (a1), R. Bijlsma (a1) and A. J. Dolman (a1)
Abstract
Summary

The lack of robustness of models of the maintenance of polymorphism in a heterogeneous environment which has been pointed out by Maynard Smith & Hoekstra (1980), applies also to models based on habitat selection, on temporal variation and on density-regulated selection. Only if (partial) dominance ‘switches’ between environments such that the fitness of the heterozygote is always close to the favoured homozygote, is there reasonable robustness. This is true for all models considered. It is argued that there are good reasons for supposing that the favourable allele at a locus may show dominance, although the experimental evidence is still scanty.

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J. Arnold & W. W. Anderson (1983). Density-regulated selection in a heterogeneous environment. American Naturalist 121, 656668.

P. J. Avery (1978). Selection effects in a model of two intermigrating colonies of finite size. Theoretical Population Biology 13, 2439.

D. A. Briscoe , A. Robertson & J. M. Malpica (1975). Dominance at Adh locus in response to adult Drosophila melanogaster to environmental alcohol. Nature 255, 148149.

F. B. Christiansen (1975). Hard and soft selection in a subdivided population. American Naturalist 109, 1116.

E. R. Dempster (1955). Maintenance of genetic heterogeneity. Cold Spring Harbour Symposia on Quantitative Biology 20, 2532.

J. Felsenstein (1976). The theoretical population genetics of variable selection and migration. Annual Review of Genetics 10, 253280.

R. A. Fisher & S. B. Holt (1944). The experimental modification of dominance in Danforth's short-tailed mutant mice. Annals of Eugenics 12, 102120.

E. B. Ford (1940). Genetic research in the lepidoptera. Annals of Eugenics 10, 227252.

J. H. Gillespie (1976). A general model to account for enzyme variation in natural populations. II. Characterization of the fitness functions. American Naturalist 110, 809821.

J. B. S. Haldane & S. D. Jayakar (1963). Polymorphism due to selection of varying direction. Journal of Genetice 58, 237242.

P. W. Hedrick , M. E. Ginevan & E. P. Ewing (1976).Genetic polymorphism in heterogeneous environments. Annual Review of Ecology and Systematics 7, 132.

J. S. Jones (1980). Can genes choose habitats? Nature 286, 757758.

J. S. Jones & F. R. Probert (1980). Habitat selection maintains a deleterious allele in a heterogeneous environment. Nature 287, 632633.

H. Levene (1953). Genetic equilibrium when more than one ecological niche is available. American Naturalist 87, 331333.

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Genetics Research
  • ISSN: 0016-6723
  • EISSN: 1469-5073
  • URL: /core/journals/genetics-research
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