Genetic loads at a polymorphic locus which is maintained by frequency-dependent selection
نویسندگان
چکیده
منابع مشابه
Polymorphism at a mimicry supergene maintained by opposing frequency-dependent selection pressures.
Explaining the maintenance of adaptive diversity within populations is a long-standing goal in evolutionary biology, with important implications for conservation, medicine, and agriculture. Adaptation often leads to the fixation of beneficial alleles, and therefore it erodes local diversity so that understanding the coexistence of multiple adaptive phenotypes requires deciphering the ecological...
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Results of fitness estimates for the Lap locus in Drosophila melanogaster revealed that under crowded media conditions gene frequency equilibrium was maintained by frequency-dependent selection. Evidence was obtained that indicated that mating and egg-to-adult viability were frequency dependent.
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Genetic drift will cause a migration-selection cline to wobble about its expected position. A rough linear approximation is developed, valid when local populations are large. This is used to calculate effects of genetic drift on clines in a stepping-stone model with abrupt and with gradual changes of selection coefficients at a single haploid locus. Among the quantities calculated are measures ...
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ژورنال
عنوان ژورنال: Genetical Research
سال: 1970
ISSN: 0016-6723,1469-5073
DOI: 10.1017/s0016672300002378