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Updated: Aug 15, 2026

Assessing Differences in Sperm Competitive Ability in Drosophila
Published on: August 22, 2013
Examples of the effect of genetic variation on competing species
Abstract:
An ordinary differential equation model for two competing populations with genetic variation in one population is presented. The degree of frequency dependence needed to produce various configurations of stable equilibria is discussed. For example, if the fitnesses are frequency independent then there may exist stable polymorphism although the genetically varying population becomes extinct in each fixation plane. Stable polymorphism where the genetically invariant population becomes extinct in each fixation plane requires frequency dependence in the fitness of the genetically invariant population.
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