Open AccessA model of kin selection for an altruistic trait considered as a quantitative character.
Author(s) -
Shozo Yokoyama,
Joseph Felsenstein
Publication year - 1978
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.75.1.420
Subject(s) - kin selection , trait , character (mathematics) , natural selection , selection (genetic algorithm) , inclusive fitness , quantitative trait locus , group selection , biology , locus (genetics) , stabilizing selection , kin recognition , altruism (biology) , genetics , evolutionary biology , statistics , mathematics , computer science , artificial intelligence , gene , programming language , geometry
Conditions for natural selection to favor increase of a quantitative character are derived for a model in which individuals associate in groups of size n. It is assumed that the logarithm of the fitness of an individual is the sum of two parts, one proportional to the individual's own phenotype, and the other to the mean phenotype in its group. The resulting conditions for the trait to increase under natural selection are analogous to the results found previously in single-locus kin selection models.