Variation of heterozygosity at 11 loci for blood group systems (erythrocyte antigens), occurred during 14 years in the domestic pig population of Kemerovskaya breed is described. The two estimates computed for the population examined were represented by expected population heterozygosity, as a measure resistant to stochastic fluctuations, and individual heterozygosity, as a measure with the features of a quantitative trait. Our results showed that relative fitness of genotypic classes, formed by the alleles of erythrocyte antigen loci, was different. It was demonstrated that the population examined carried the alleles responsible for fitness decrease, as well as the alleles with stable and unstable equilibrium points (with increased and decreased relative fitness of heterozygotes). Suggestions based on these results, could be applied not only to the population examined, but also to the domesticated form of Sus scrofa as a whole.
Russian Journal of Genetics – Springer Journals
Published: Oct 11, 2009
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