Abstract:7 Unsampled or extinct 'ghost' populations leave signatures on the genomes of individuals from extant, 8 sampled populations, especially if they have exchanged genes with them over evolutionary time. This gene 9 flow from 'ghost' populations can introduce biases when estimating evolutionary history from genomic 10 data, often leading to data misinterpretation and ambiguous results. To assess the extent of this bias, we 11 perform an extensive simulation study under varying degrees of gene flow to and from 'gho… Show more
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