Mark C Ungerer, Kansas State University, Manhattan, Kansas, USA
Loren H Rieseberg, Indiana University, Bloomington, Indiana, USA
Published online: September 2005
DOI: 10.1038/npg.els.0004203
New species arise when previously interbreeding populations become isolated by reproductive barriers. These barriers are thought to originate as a byproduct of genetic divergence between geographically isolated populations; they may have a complex polygenic basis or be under simple genetic control.
Keywords: reproductive isolation; genetic architecture; standard modelHaldane's rule; hybrid speciation
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