期刊
TRENDS IN GENETICS
卷 28, 期 7, 页码 342-350出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tig.2012.03.009
关键词
speciation genomics; divergence hitchhiking; genome hitchhiking; gene flow; genome scan; reproductive isolation
资金
- National Science Foundation
- US Department of Agriculture
- European Research Council
- Direct For Biological Sciences
- Division Of Environmental Biology [1145573] Funding Source: National Science Foundation
The emerging field of speciation genomics is advancing our understanding of the evolution of reproductive isolation from the individual gene to a whole-genome perspective. In this new view it is important to understand the conditions under which 'divergence hitchhiking' associated with the physical linkage of gene regions, versus 'genome hitchhiking' associated with reductions in genome-wide rates of gene flow caused by selection, can enhance speciation-with-gene-flow. We describe here a theory predicting four phases of speciation, defined by changes in the relative effectiveness of divergence and genome hitchhiking, and review empirical data in light of the theory. We outline future directions, emphasizing the need to couple next-generation sequencing with selection, transplant, functional genomics, and mapping studies. This will permit a natural history of speciation genomics that will help to elucidate the factors responsible for population divergence and the roles that genome structure and different forms of hitchhiking play in facilitating the genesis of new biodiversity.
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