title: Bisexual branching processes to model extinction conditions for Y-linked genes.
abstract: In a two-sex monogamic population, the evolution of the number of carriers of the two alleles of a Y-linked gene is considered. To this end, a multitype bisexual branching model is presented in which it is assumed that the gene has no influence on the mating process. It is deduced from this model that the average numbers of female and male descendants per mating unit constitute the key to determining the extinction or survival of each allele. Moreover, the destiny of each allele in the population is found not to depend on the behavior of the other.
authors.affiliation: Department of Mathematics, University of Extremadura, Badajoz 06071, Spain.
authors.forename: Miguel
authors.initials: M
authors.lastname: González
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Martínez
authors.forename: Manuel
authors.initials: M
authors.lastname: Mota
mesh_terms: D000818:Animals; D003198:Computer Simulation; D053476:Extinction, Biological; D005260:Female; D005787:Gene Frequency; D050173:Genes, Y-Linked; D014644:Genetic Variation; D006579:Heterozygote; D006801:Humans; D008297:Male; D008957:Models, Genetic; D011157:Population Dynamics; D012726:Sexual Behavior, Animal; D013269:Stochastic Processes