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Journal of Heredity Advance Access published online on December 28, 2006
Journal of Heredity, doi:10.1093/jhered/esl060
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© The American Genetic Association. 2006. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org.

Speciation in Drosophila: From Phenotypes to Molecules

H Allen Orr, JP Masly, and Nitin Phadnis

From the Department of Biology, University of Rochester, Rochester, NY 14627

Address correspondence to H. Allen Orr at the address above, or e-mail: aorr{at}mail.rochester.edu.

Study of the genetics of speciation—and especially of the genetics of intrinsic postzygotic isolation—has enjoyed remarkable progress over the last 2 decades. Indeed progress has been so rapid that one might be tempted to ask if the genetics of postzygotic isolation is now wrapped up. Here we argue that the genetics of speciation is far from complete. In particular, we review 2 topics where recent work has revealed major surprises: 1) the role of meiotic drive in hybrid sterility and 2) the role of gene transposition in speciation. These surprises, and others like them, suggest that evolutionary biologists may understand less about the genetic basis of speciation than seemed likely a few years ago.


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