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(A) Open circles show relative frequencies (horizontal axis) of nucleotide sites exhibiting each site pattern (vertical axis) in four populations: , YRI; , CEU; , Neanderthal; and , Denisovan. (B) Expanded view of four site-pattern frequencies, showing 95% confidence intervals, estimated by moving-blocks bootstrap, with 1,000 polymorphic nucleotide sites per block (13).
