Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 102, Issue -, Pages 6522-6526Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.0501893102
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- NIGMS NIH HHS [R29 GM051932, GM51932, R01 GM051932] Funding Source: Medline
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Recent studies of the genetics of speciation in Drosophila have focused on two problems: (i) identifying and characterizing the genes that cause reproductive isolation, and (h) determining the evolutionary forces that drove the divergence of these '' speciation genes.'' Here, I review this work. I conclude that speciation genes correspond to ordinary loci having normal functions within species. These genes fall into several functional classes, although a role in transcriptional regulation could prove particularly common. More important, speciation genes are typically very rapidly evolving, and this divergence is often driven by positive Darwinian selection. Finally, I review recent work in Drosophila pseudoobscura on the possible role of meiotic drive in the evolution of the genes that cause postzygotic isolation.
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