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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...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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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. |
format | Online Article Text |
id | pubmed-5924533 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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