Journal
EVOLUTION
Volume 65, Issue 8, Pages 2133-2144Publisher
WILEY
DOI: 10.1111/j.1558-5646.2011.01316.x
Keywords
Evolutionary genomics; sexual conflict; sex
Categories
Funding
- NERC
- BBSRC
- ERC under the European Community [260233]
- European Research Council (ERC) [260233] Funding Source: European Research Council (ERC)
- Biotechnology and Biological Sciences Research Council [BB/H002006/1] Funding Source: researchfish
- Natural Environment Research Council [NE/G005303/1] Funding Source: researchfish
- BBSRC [BB/H002006/1] Funding Source: UKRI
- NERC [NE/G005303/1] Funding Source: UKRI
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Sex chromosome dosage compensationwas once thought to be required to balance gene expression levels between sex-linked and autosomal genes in the heterogametic sex. Recent evidence from a range of animals has indicated that although sex chromosome dosage compensation exists in some clades, it is far from a necessary companion to sex chromosome evolution, and is in fact rather rare in animals. This raises questions about why complex dosage compensation mechanisms arise in some clades when they are not strictly needed, and suggests that the role of sex-specific selection in sex chromosome gene regulation should be reassessed. We show there exists a tremendous diversity in the mechanisms that regulate gene dosage and argue that sexual conflict may be an overlooked agent responsible for some of the variation seen in sex chromosome gene dose regulation.
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