On the evolution of genetic incompatibility systems. IV: Modification of response to an existing antigen polymorphism under partial selfing
type: Item
instance of: scholarly article
title: On the evolution of genetic incompatibility systems. IV: Modification of response to an existing antigen polymorphism under partial selfing
zbMATH Open document ID: 0655.92009
DOI: 10.1016/0040-5809(88)90028-7
author: Marcy K. Uyenoyama
published in: Theoretical Population Biology
publication date: 1988-01-01T00:00:00Z
review text: [For part III see ibid. No.1, 47-91 (1988; Zbl 0653.92008)]. A 2-locus model of the evolution of self-incompatibility in a population practicing partial selfing is presented. An allele is introduced at a modifier locus which influences the strength of the rejection reaction expressed by the style in response to antigens recognized in pollen. Two causes of inbreeding depression are investigated. First, offspring viability depends solely on the source (self or non-self) of the fertilizing pollen. Second, offspring viability declines with the expression of recessive deleterious alleles, segregating at a third (disease) locus, which exhibit an imperfect association with antigen alleles. Evolutionary changes occurring at the disease locus are not considered in this study. The condition under which a modifier allele that intensifies the incompatibility reaction increases when rare depends upon the number of antigens, the frequency of recessive deleterious alleles at the disease locus, and the level of association between the antigen locus and the disease locus. It is the improvement of viability among offspring derived by outcrossing, rather than the prevention of self-fertilization, that may represent the primary evolutionary function of genetic incompatibility systems.
Mathematics Subject Classification ID: 92D10
zbMATH DE Number: 4070697
zbMATH Keywords: 2-locus model of the evolution of self-incompatibility
zbMATH Keywords: partial selfing
zbMATH Keywords: inbreeding depression
zbMATH Keywords: offspring viability
zbMATH Keywords: recessive deleterious alleles
zbMATH Keywords: incompatibility reaction
zbMATH Keywords: disease locus
zbMATH Keywords: antigen locus
zbMATH Keywords: genetic incompatibility systems
Wikidata QID: Q43798157
MaRDI profile type: Publication
full work available at URL: 0040-5809(88)90028-7
OpenAlex ID: W1996558887
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cites work: Models of the evolution of altruism
cites work: Q5652486
cites work: On the evolution of genetic incompatibility systems. III. Introduction of weak gametophytic self-incompatibility under partial inbreeding
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description: scientific article; zbMATH DE number 4070697