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Polymorphism in an Inbreeding Population under Models Involving Underdominance
S. K. Jain and K. B. L. Jain
New Series, Vol. 166, No. 3910 (Dec. 5, 1969), pp. 1294-1296
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/1727138
Page Count: 3
You can always find the topics here!Topics: Inbreeding, Overdominance, Genotypes, Heterozygotes, Phase diagrams, Modeling, Pure stands, Genetics
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Models of selection favoring homozygotes over the heterozygotes and involving frequency-dependency in their competitive abilities were simulated in order to determine the conditions for maintaining stable polymorphism at a diallelic locus in large inbreeding populations. With heavier inbreeding, frequency-dependency could increasingly override the effects of underdominance in both pure stand and the competing ability components of fitness in terms of yielding stable notrivial equilibriums. The significance of such selection models is discussed for the retention of variability in inbreeding populations with a minimum of segregational load and higher overall stability in contrast to the overdominance models.
Science © 1969 American Association for the Advancement of Science