Published online by Cambridge University Press: 14 July 2016
The Wright–Fisher model with varying population size is examined in the case where the selective advantage varies from generation to generation. Models are considered where the selective advantage is not always in favour of a particular genotype. Sufficient conditions in terms of the selection coefficients and the population growth are given to ensure ultimate homozygosity.
Research partly carried out while the author was visiting the University of Michigan, Ann Arbor.