The paradoxical spread of a new Y chromosome - a novel explanation

Details

Serval ID
serval:BIB_744711CF395D
Type
Article: article from journal or magazin.
Collection
Publications
Title
The paradoxical spread of a new Y chromosome - a novel explanation
Journal
Trends in Ecology and Evolution
Author(s)
Pannell J.R, Pujol B.
ISSN
0169-5347
Publication state
Published
Issued date
2009
Peer-reviewed
Oui
Volume
24
Number
2
Pages
59-63
Language
english
Abstract
Hybrid zones provide one of the more prickly challenges to the cherished biological species concept, which is based on reproductive isolation between species, because some hybrid zones occur in areas where recognised species come together and mate to produce viable progeny. By contrast, hybrid zones have repeatedly provided outstanding material for the study of evolution: they allow us to study ecological and genomic differences between recently diverged taxa; and they bring into sharp focus the interplay between migration, selection, recombination and drift. A new theoretical analysis now demonstrates that hybrid-zone dynamics provide a counterintuitive explanation for how a new chromosomal sex-determination system can evolve and spread across the landscape, displacing the ancestral system, even though it would be eliminated by natural selection in a single isolated population. This work thus provides a provocative resolution to a conundrum that has puzzled cytogeneticists and evolutionary biologists for years.
Web of science
Create date
14/09/2011 15:57
Last modification date
20/08/2019 15:32
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