title: The effect of variable environments on polymorphism at loci with several alleles II. Submultiplicative viabilities.
abstract: Circumstances assuring a unique stable equilibrium are investigated for a subdivided population with several alleles segregating at a single locus. For a broad class of selection regimes entailing heterozygote viabilities greater than the geometric mean of the corresponding homozygote viabilities, a stable fixation state precludes any other stable equilibria if either total-panmixia or temporal variation is operating. This extends known results for two alleles at a single locus and partially delimits when some of the bizarre behaviour engendered by multiple alleles may occur.
mesh_terms: D000483:Alleles; D006579:Heterozygote; D006720:Homozygote; D008433:Mathematics; D008957:Models, Genetic; D011110:Polymorphism, Genetic