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Data from: Sex uncovered special issue: selective maintenance of recombination between the sex chromosomes Otto, Sally; Otto, Sarah P.
Description
Abstract
A hallmark of many sex chromosomes is the dramatically reduced rate of recombination between them in the heterogametic sex (e.g., between the X and Y). Sexually antagonistic selection is thought to be the main selective driver of this reduced recombination, with tighter linkage strengthening the association between alleles favourable to females and the X, as well as alleles favourable to males and the Y. Nevertheless, many sex chromosomes retain substantial levels of recombination over millions of years, and some old sex chromosomes remain homomorphic with few signs of recombination suppression and the chromosomal degradation expected to follow. This paper explores the selective factors that can maintain recombination between the sex chromosomes. Specifically, by analysing the dynamics of genes that modify the rate of recombination, I present results demonstrating that certain forms of selection – all involving overdominance in males – can positively maintain recombination in the pseudo-autosomal region. To understand these cases, one has to revise our standard view of sexual antagonistic selection as involving two partners (males and females) to three partners (the X in females, the X in males, and the Y).; Usage notes
Analysis (Mathematica file)Mathematica 8.0 (Wolfram Research, Inc. 2010) package detailing the recursion equations, analyses, and simulations conducted.RecModifier.nbAnalysis (PDF)PDF of a Mathematica 8.0 (Wolfram Research, Inc. 2010) package detailing the recursion equations, analyses, and simulations conducted.RecModifier.pdf
Item Metadata
Title |
Data from: Sex uncovered special issue: selective maintenance of recombination between the sex chromosomes
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Creator | |
Date Issued |
2021-05-19
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Description |
Abstract
A hallmark of many sex chromosomes is the dramatically reduced rate of recombination between them in the heterogametic sex (e.g., between the X and Y). Sexually antagonistic selection is thought to be the main selective driver of this reduced recombination, with tighter linkage strengthening the association between alleles favourable to females and the X, as well as alleles favourable to males and the Y. Nevertheless, many sex chromosomes retain substantial levels of recombination over millions of years, and some old sex chromosomes remain homomorphic with few signs of recombination suppression and the chromosomal degradation expected to follow. This paper explores the selective factors that can maintain recombination between the sex chromosomes. Specifically, by analysing the dynamics of genes that modify the rate of recombination, I present results demonstrating that certain forms of selection – all involving overdominance in males – can positively maintain recombination in the pseudo-autosomal region. To understand these cases, one has to revise our standard view of sexual antagonistic selection as involving two partners (males and females) to three partners (the X in females, the X in males, and the Y).; Usage notes Analysis (Mathematica file)Mathematica 8.0 (Wolfram Research, Inc. 2010) package detailing the recursion equations, analyses, and simulations conducted.RecModifier.nbAnalysis (PDF)PDF of a Mathematica 8.0 (Wolfram Research, Inc. 2010) package detailing the recursion equations, analyses, and simulations conducted.RecModifier.pdf |
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Type | |
Notes |
Dryad version number: 1 Version status: submitted Dryad curation status: Published Sharing link: https://datadryad.org/stash/share/fSrBCGBX21JQjHqI7YvFZCQNUKf2_590ObnPFUjEjBc</p> Storage size: 8952236 Visibility: public |
Date Available |
2020-06-30
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Provider |
University of British Columbia Library
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License |
CC0 1.0
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DOI |
10.14288/1.0397740
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URI | |
Publisher DOI | |
Rights URI | |
Aggregated Source Repository |
Dataverse
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Item Media
Item Citations and Data
License
CC0 1.0