Selection for sex in finite populations
| Autor: | Denis Roze |
|---|---|
| Přispěvatelé: | Sorbonne Université (SU), Evolutionary Biology and Ecology of Algae (EBEA), Station biologique de Roscoff [Roscoff] (SBR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Universidad Austral de Chile-Centre National de la Recherche Scientifique (CNRS)-Pontificia Universidad Católica de Chile (UC), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Pontificia Universidad Católica de Chile (UC)-Universidad Austral de Chile-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Evolution of sexual reproduction
Genetic Linkage Population selection Locus (genetics) Biology Models Biological Gene Frequency Genetic drift Selection Genetic Allele education Ecology Evolution Behavior and Systematics evolution of sex Genetics education.field_of_study multilocus model [SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] Reproduction Population size [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] Genetic Variation modifier model Biological Evolution Sexual reproduction deleterious mutation Evolutionary biology genetic drift Recombination |
| Zdroj: | Journal of Evolutionary Biology Journal of Evolutionary Biology, Wiley, 2014, 27, pp.1304-132. ⟨10.1111/jeb.12344⟩ Journal of Evolutionary Biology, 2014, 27, pp.1304-132. ⟨10.1111/jeb.12344⟩ |
| ISSN: | 1010-061X 1420-9101 |
| DOI: | 10.1111/jeb.12344⟩ |
| Popis: | International audience; Finite population size generates interference between selected loci, which has been shown to favour increased rates of recombination. In this article, I present different analytical models exploring selection acting on a ‘sex modifier locus’ (that affects the relative investment into asexual and sexual reproduction) in a finite population. Two forms of selective forces act on the modifier: direct selection due to intrinsic costs associated with sexual reproduction and indirect selection generated by one or two other loci affecting fitness. The results show that indirect selective forces differ from those acting on a recombination modifier even in the case of a haploid population: in particular, a single selected locus generates indirect selection for sex, while two loci are required in the case of a recombination modifier. This effect stems from the fact that modifier alleles increasing sex escape more easily from low-fitness genetic backgrounds than alleles coding for lower rates of sex. Extrapolating the results from three-locus models to a large number of loci at mutation–selection balance indicates that in the parameter range where indirect selection is strong enough to outweigh a substantial cost of sex, interactions between selected loci have a stronger effect than the sum of individual effects of each selected locus. Comparisons with multilocus simulation results show that such extrapolations may provide correct predictions for the evolutionarily stable rate of sex, unless the cost of sex is high. |
| Databáze: | OpenAIRE |
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