Comparative Population Genetics of the Immunity Gene, Relish: Is Adaptive Evolution Idiosyncratic?
Open Access
- 16 May 2007
- journal article
- research article
- Published by Public Library of Science (PLoS) in PLOS ONE
- Vol. 2 (5) , e442
- https://doi.org/10.1371/journal.pone.0000442
Abstract
The frequency of adaptive evolution acting on common loci in distant lineages remains an outstanding question in evolutionary biology. We asked whether the immunity factor, Relish, a gene with a history of directional selection in Drosophila simulans, shows evidence of a similar selective history in other Drosophila species. We found only weak evidence of recurrent adaptive protein evolution at the Relish locus in three sister species pairs, suggesting that this key component of the insect immune system has an idiosyncratic evolutionary history in Drosophila.Keywords
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