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Hybrids between species provide information about the evolutionary processes involved in divergence. In addition to creating hybrids in the laboratory, biologists can take advantage of natural hybrid zones to understand the factors that shape gene flow between divergent lineages. In the early stages of speciation, most regions of the genome continue to flow freely between populations. Alternatively,...
Inferring the frequency and mode of hybridization among closely related organisms is an important step for understanding the process of speciation and can help to uncover reticulated patterns of phylogeny more generally. Phylogenomic methods to test for the presence of hybridization come in many varieties and typically operate by leveraging expected patterns of genealogical discordance in the absence...
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