POLYMORPHISM IN A VARIED ENVIRONMENT - HOW ROBUST ARE THE MODELS

摘要: This paper shows that a number of models the maintenance polymorphism in heterogeneous environment, including those Levene and Dempster, can be derived from simple assumption about way which numbers kinds individuals emerging niche depend on eggs laid it. It is shown for such models, unless selective advantages per locus are large, protected requires relative sizes lie narrow range. lack robustness applies also to stable proposed by Clarke Stewart & Levin. Excluding relaying habitat selection or restricted migration, only may escape this criticism diploid with partial dominance respect fitness, as one Gillespie, all niches fitness heterozygotes higher than arithmetic mean homozygotes.