Article
Experimental evidence that extra-pair mating drives asymmetrical introgression of a sexual trait.
Proceedings. Biological sciences - 22 Nov 2013
Baldassarre Daniel T, Webster Michael S
Abstract excerpt
Theory suggests that traits under positive selection may introgress asymmetrically across a hybrid zone, potentially driven by sexual selection. Two subspecies of the red-backed fairy-wren (Malurus melanocephalus) differ primarily in a sexual signal used in mate choice-red versus orange male back plumage colour-but phylogeographic analyses suggest asymmetrical introgression of red plumage into the genetic...
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