Intralocus sexual conflict resolved through gene duplication

Gene duplication is mainly recognized by its primary role in the origin of new genes and functions. However, the idea that gene duplication can be a central player in resolving sexual genetic conflicts through its potential to generate sex-biased and sex-specifically expressed genes, has been almost...

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Bibliographic Details
Published in:Trends in ecology & evolution (Amsterdam) 2011-05, Vol.26 (5), p.222-228
Main Authors: Gallach, Miguel, Betrán, Esther
Format: Article
Language:English
Subjects:
Adaptation, Physiological - genetics
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Biological and medical sciences
Biological Evolution
Female
Fundamental and applied biological sciences. Psychology
Gene Duplication
Gene Expression
General aspects
Genome
Male
Models, Genetic
Reproduction - genetics
Selection, Genetic
Sex Characteristics
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Summary:Gene duplication is mainly recognized by its primary role in the origin of new genes and functions. However, the idea that gene duplication can be a central player in resolving sexual genetic conflicts through its potential to generate sex-biased and sex-specifically expressed genes, has been almost entirely overlooked. We review recent data and theory that support gene duplication as a theoretically predicted and experimentally supported means of resolving intralocus sexual antagonism. We believe that this role is probably the consequence of sexual conflict for housekeeping genes that are required in males and females, and which are expressed in sexually dimorphic tissues (i.e. where sexually antagonistic selection is exerted). We think that these genes cannot evolve tissue-specific expression unless they duplicate.
ISSN:0169-5347
1872-8383
DOI:10.1016/j.tree.2011.02.004