title: A theory of natural selection incorporating interaction among individuals. IX. Use of groups consisting of a mating pair and sterile diploid caste members.
mesh_terms: D000818:Animals; D004171:Diploidy; D005260:Female; D006801:Humans; D007246:Infertility; D008297:Male; D008433:Mathematics; D008957:Models, Genetic; D012641:Selection, Genetic; D012725:Sexual Behavior