Fixation time of overdominant alleles influenced by random fluctuation of selection intensity
- 1 August 1972
- journal article
- research article
- Published by Hindawi Limited in Genetics Research
- Vol. 20 (1), 1-7
- https://doi.org/10.1017/s0016672300013549
Abstract
SUMMARY: It was demonstrated that the number of generations until fixation or loss of an overdominant alleles is influenced by random fluctuation of selection coefficients. When 2<Vs, whereis the mean selection coefficient against either homozygote andVsis the between -generation variance of the selection coefficient, overdominance generally accelerates rather than retards fixation of segregating alleles. This finding should have important bearing on our consideration of the behaviour of polymorphic variants which are nearly neutral but have very slight overdominance. When the population size (Ne) is extremely large, not onlyNebut also/Vshave to be considered in discussing the effectiveness of overdominance.Keywords
This publication has 8 references indexed in Scilit:
- Fixation probability of a mutant influenced by random fluctuation of selection intensityGenetics Research, 1972
- BEHAVIOR OF NEUTRAL MUTANTS INFLUENCED BY ASSOCIATED OVERDOMINANT LOCI IN FINITE POPULATIONSGenetics, 1971
- An Introduction to Population Genetics TheoryPopulation, 1971
- Theoretical foundation of population genetics at the molecular levelTheoretical Population Biology, 1971
- Enzyme Variability in the Drosophila willistoni Group, I. Genetic Differentiation Among Sibling SpeciesProceedings of the National Academy of Sciences, 1970
- Development of associative overdominance through linkage disequilibrium in finite populationsGenetics Research, 1970
- Heterozygote selective advantageAnnals of Human Genetics, 1970
- The Diffusion Equation and a Pseudo-Distribution in GeneticsJournal of the Royal Statistical Society Series B: Statistical Methodology, 1963