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Genomic Signatures of Reinforcement

Reinforcement is the process by which selection against hybridization increases reproductive isolation between taxa. Much research has focused on demonstrating the existence of reinforcement, yet relatively little is known about the genetic basis of reinforcement or the evolutionary conditions under...

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Autores principales: Garner, Austin G., Goulet, Benjamin E., Farnitano, Matthew C., Molina-Henao, Y. Franchesco, Hopkins, Robin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5924533/
https://www.ncbi.nlm.nih.gov/pubmed/29614048
http://dx.doi.org/10.3390/genes9040191
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author Garner, Austin G.
Goulet, Benjamin E.
Farnitano, Matthew C.
Molina-Henao, Y. Franchesco
Hopkins, Robin
author_facet Garner, Austin G.
Goulet, Benjamin E.
Farnitano, Matthew C.
Molina-Henao, Y. Franchesco
Hopkins, Robin
author_sort Garner, Austin G.
collection PubMed
description Reinforcement is the process by which selection against hybridization increases reproductive isolation between taxa. Much research has focused on demonstrating the existence of reinforcement, yet relatively little is known about the genetic basis of reinforcement or the evolutionary conditions under which reinforcement can occur. Inspired by reinforcement’s characteristic phenotypic pattern of reproductive trait divergence in sympatry but not in allopatry, we discuss whether reinforcement also leaves a distinct genomic pattern. First, we describe three patterns of genetic variation we expect as a consequence of reinforcement. Then, we discuss a set of alternative processes and complicating factors that may make the identification of reinforcement at the genomic level difficult. Finally, we consider how genomic analyses can be leveraged to inform if and to what extent reinforcement evolved in the face of gene flow between sympatric lineages and between allopatric and sympatric populations of the same lineage. Our major goals are to understand if genome scans for particular patterns of genetic variation could identify reinforcement, isolate the genetic basis of reinforcement, or infer the conditions under which reinforcement evolved.
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spelling pubmed-59245332018-05-03 Genomic Signatures of Reinforcement Garner, Austin G. Goulet, Benjamin E. Farnitano, Matthew C. Molina-Henao, Y. Franchesco Hopkins, Robin Genes (Basel) Review Reinforcement is the process by which selection against hybridization increases reproductive isolation between taxa. Much research has focused on demonstrating the existence of reinforcement, yet relatively little is known about the genetic basis of reinforcement or the evolutionary conditions under which reinforcement can occur. Inspired by reinforcement’s characteristic phenotypic pattern of reproductive trait divergence in sympatry but not in allopatry, we discuss whether reinforcement also leaves a distinct genomic pattern. First, we describe three patterns of genetic variation we expect as a consequence of reinforcement. Then, we discuss a set of alternative processes and complicating factors that may make the identification of reinforcement at the genomic level difficult. Finally, we consider how genomic analyses can be leveraged to inform if and to what extent reinforcement evolved in the face of gene flow between sympatric lineages and between allopatric and sympatric populations of the same lineage. Our major goals are to understand if genome scans for particular patterns of genetic variation could identify reinforcement, isolate the genetic basis of reinforcement, or infer the conditions under which reinforcement evolved. MDPI 2018-04-03 /pmc/articles/PMC5924533/ /pubmed/29614048 http://dx.doi.org/10.3390/genes9040191 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Garner, Austin G.
Goulet, Benjamin E.
Farnitano, Matthew C.
Molina-Henao, Y. Franchesco
Hopkins, Robin
Genomic Signatures of Reinforcement
title Genomic Signatures of Reinforcement
title_full Genomic Signatures of Reinforcement
title_fullStr Genomic Signatures of Reinforcement
title_full_unstemmed Genomic Signatures of Reinforcement
title_short Genomic Signatures of Reinforcement
title_sort genomic signatures of reinforcement
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5924533/
https://www.ncbi.nlm.nih.gov/pubmed/29614048
http://dx.doi.org/10.3390/genes9040191
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