期刊
MOLECULAR ECOLOGY
卷 26, 期 20, 页码 5362-5368出版社
WILEY
DOI: 10.1111/mec.14290
关键词
allopatric speciation; balancing selection; differential gene flow; genomic divergence
资金
- Division of Molecular and Cellular Biosciences [MCB-1127059]
- National Science Foundation [MCB-1127059]
Because they are considered rare, balanced polymorphisms are often discounted as crucial constituents of genome-wide variation in sequence diversity. Despite its perceived rarity, however, long-term balancing selection can elevate genetic diversity and significantly affect observed divergence between species. Here, we discuss how ancestral balanced polymorphisms can be sieved by the speciation process, which sorts them unequally across descendant lineages. After speciation, ancestral balancing selection is revealed by genomic regions of high divergence between species. This signature, which resembles that of other evolutionary processes, can potentially confound genomic studies of population divergence and inferences of islands of speciation.
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