Invasion and fixation of sex-reversal genes.

Détails

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Etat: Public
Version: de l'auteur⸱e
ID Serval
serval:BIB_26F923B014E8
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Invasion and fixation of sex-reversal genes.
Périodique
Journal of Evolutionary Biology
Auteur⸱e⸱s
Vuilleumier S., Lande R., Van Alphen J.J., Seehausen O.
ISSN
1010-061X (Print)
ISSN-L
1010-061X
Statut éditorial
Publié
Date de publication
2007
Peer-reviewed
Oui
Volume
20
Numéro
3
Pages
913-920
Langue
anglais
Résumé
We simulated a meta-population with random dispersal among demes but local mating within demes to investigate conditions under which a dominant female-determining gene W, with no individual selection advantage, can invade and become fixed in females, changing the population from male to female heterogamety. Starting with one mutant W in a single deme, the interaction of sex ratio selection and random genetic drift causes W to be fixed among females more often than a comparable neutral mutation with no influence on sex determination, even when YY males have slightly reduced viability. Meta-population structure and interdeme selection can also favour the fixation of W. The reverse transition from female to male heterogamety can also occur with higher probability than for a comparable neutral mutation. These results help to explain the involvement of sex-determining genes in the evolution of sex chromosomes and in sexual selection and speciation.
Mots-clé
Animals, Evolution, Molecular, Female, Genetic Drift, Genetic Speciation, Genotype, Male, Models, Genetic, Mutation, Population Density, Sex Chromosomes, Sex Determination Processes, Sex Ratio
Pubmed
Web of science
Open Access
Oui
Création de la notice
15/07/2008 13:09
Dernière modification de la notice
20/08/2019 13:05
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