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Detection of potential selective sweeps based on a site-frequency spectrum index. Transitions of standardized log-transformed values of the pooled heterozygosity (ZHp41) in 400-kb bins with 200-kb steps are given. The dotted line indicates the threshold, with p<0.001. The peaks exhibiting a gradual reduction in ZHp, which was lower than the threshold, are marked with white arrowheads as potential sweep regions.
