On the evolution of genetic incompatibility systems. III. Introduction of weak gametophytic self-incompatibility under partial inbreeding
type: Item
instance of: scholarly article
title: On the evolution of genetic incompatibility systems. III. Introduction of weak gametophytic self-incompatibility under partial inbreeding
zbMATH Open document ID: 0653.92008
DOI: 10.1016/0040-5809(88)90035-4
author: Marcy K. Uyenoyama
published in: Theoretical Population Biology
publication date: 1988-01-01T00:00:00Z
review text: [Part I appeared in B. Levin and R. Michod (eds.), The evolution of sex: An examination of current ideas, 212-232 (1988), and part II is to appear in Am. Nat. 131 (1988).] I explore the proposition that genetic incompatibility systems serve as a means for parents to evaluate and discriminate among their own offspring. Conditions for the initial increase of gametophytic self-incompatability in a self-compatible population undergoing selfing, sibmating, and random outcrossing are reported. The adaptive vaue of reducing the concordance between offspring and maternal genotypes depends upon the relative changes in the numbers of offspring derived by the three modes, parent-offspring relatedness, and the magnitude of distortion of transmission ratios through pollen. Recessivity of stylar expression and low rates of receipt of pollen from related individuals facilitate the evolution of self-incompatibility. Viewed as a means of preferential maternal investment in offspring of high quality, self-incompatibility may be regarded as serving a function in common with diverse phenomena, including sexual selection, brood reduction, and other forms of prezygotic and postzygotic incompatibility. Associations between incompatibility loci and loci expressing inbreeding depression are expected to improve the reliability of the level of concordance at incompatibility loci as a measure of genomic homozygosity and offspring quality.
Mathematics Subject Classification ID: 92D10
zbMATH DE Number: 4066688
zbMATH Keywords: genetic incompatibility systems
zbMATH Keywords: initial increase of gametophytic self- incompatability
zbMATH Keywords: selfing
zbMATH Keywords: sibmating
zbMATH Keywords: random outcrossing
Wikidata QID: Q68043325
MaRDI profile type: Publication
full work available at URL: 0040-5809(88)90035-4
OpenAlex ID: W2012190123
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description: scientific article; zbMATH DE number 4066688