ACCUMULATING POSTZYGOTIC ISOLATION GENES IN PARAPATRY: A NEW TWIST ON CHROMOSOMAL SPECIATION
Open Access
- 1 March 2003
- Vol. 57 (3) , 447-459
- https://doi.org/10.1111/j.0014-3820.2003.tb01537.x
Abstract
Chromosomal rearrangements can promote reproductive isolation by reducing recombination along a large section of the genome. We model the effects of the genetic barrier to gene flow caused by a chromosomal rearrangement on the rate of accumulation of postzygotic isolation genes in parapatry. We find that, if reproductive isolation is produced by the accumulation in parapatry of sets of alleles compatible within but incompatible across species, chromosomal rearrangements are far more likely to favor it than classical genetic barriers without chromosomal changes. New evidence of the role of chromosomal rearrangements in parapatric speciation suggests that postzygotic isolation is often due to the accumulation of such incompatibilities. The model makes testable qualitative predictions about the genetic signature of speciation.Keywords
This publication has 28 references indexed in Scilit:
- A genic view of species integrationJournal of Evolutionary Biology, 2001
- Theory and speciationTrends in Ecology & Evolution, 2001
- Initial sequencing and analysis of the human genomeNature, 2001
- Waiting time to parapatric speciationProceedings Of The Royal Society B-Biological Sciences, 2000
- A Dynamical Theory of Speciation on Holey Adaptive LandscapesThe American Naturalist, 1999
- Why Sex and Recombination?Science, 1998
- Rapid parapatric speciation on holey adaptive landscapesProceedings Of The Royal Society B-Biological Sciences, 1998
- Hybrid Zones With Dobzhansky-Type Epistatic SelectionEvolution, 1997
- Effective Deme Sizes During Long-Term Evolution Estimated from Rates of Chromosomal RearrangementEvolution, 1979
- On the Probability of Fixation of Reciprocal TranslocationsThe American Naturalist, 1941