Allelic genealogy under overdominant and frequency-dependent selection and polymorphism of major histocompatibility complex loci.

Abstract excerpt

To explain the long-term persistence of polymorphic alleles (trans-specific polymorphism) at the major histocompatibility complex (MHC) loci in rodents and primates, a computer simulation study was conducted about the coalescence time of different alleles sampled under various forms of selection. At the same time, average heterozygosity, the number of alleles in a sample, and the rate of codon substitution were...

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