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Epistasis-Induced Evolutionary Plateaus in Selection Responses.
Am Nat ; 188(6): E134-E150, 2016 12.
Article em En | MEDLINE | ID: mdl-27860514
Understanding and predicting evolution is a central challenge in both population and quantitative genetics. The amount of genetic variance for quantitative traits available in a population conditions the particular way in which this population will (or will not) evolve under natural or artificial selection. Here, we explore the potential of gene-gene interactions (epistasis) to induce evolutionary plateaus at which evolutionary change virtually collapses for a number of generations, followed by the release of previously cryptic genetic variation. First, we demonstrate theoretically that a wide range of epistatic interactions has the potential to generate temporary decelerations in the course of response to selection. Second, we perform simulations to show that such microevolutionary plateaus may occur in selection responses under empirically based assumptions. Finally, we show that such events can be traced in artificial selection experiments, thus providing further empirical evidence for this phenomenon.
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Seleção Genética / Galinhas / Epistasia Genética / Evolução Biológica / Camundongos Tipo de estudo: Prognostic_studies Limite: Animals Idioma: En Ano de publicação: 2016 Tipo de documento: Article
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Seleção Genética / Galinhas / Epistasia Genética / Evolução Biológica / Camundongos Tipo de estudo: Prognostic_studies Limite: Animals Idioma: En Ano de publicação: 2016 Tipo de documento: Article