Genetic diversity in partially selfing populations with the stepping-stone structure

Hidenori Tachida, Hiroshi Yoshimaru

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A method to compute identity coefficients of two genes in the stepping-stone model with partial selfing is developed. The identity coefficients in partially selfing populations are computed from those in populations without selfing as functions of s (selfing rate), m (migration rate), N (subpopulation size), n (number of subpopulations) and u (mutation rate). For small m, 1/N and u, it is shown that approximate formulae for the identity coefficients of two genes from different individuals are the same as those in random mating populations if we replace N in the latter with N(1 - s/2). Thus, the effects of selfing on genetic variability are summarized as reducing variation within subpopulations and increasing differentiation among subpopulations by reducing the subpopulation size. The extent of biparental inbreeding as measured by the genotypic correlation between truly outcrossed mates was computed in the one-dimensional stepping-stone model. The correlation was shown to be independent of the selfing rate and starts to fall off as the migration rate increases when mN is larger than 0.1.

Original languageEnglish
Pages (from-to)469-475
Number of pages7
JournalHeredity
Volume77
Issue number5
DOIs
Publication statusPublished - Nov 1996

All Science Journal Classification (ASJC) codes

  • Genetics
  • Genetics(clinical)

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