Fig. 1.—

Scans of population genetics statistics across the five major chromosomal arms of the D. mauritiana genome. The four statistics were calculated in nonoverlapping 10-kb windows. Each column of plots represents scans from a single chromosome arm. The top row of plots (blue points) shows scans of nucleotide diversity (π). The second row of plots (red points) shows the distribution of a likelihood ratio test statistic that measures the deviation of the local allele frequency spectrum (LR). The third row of plots (grey points) shows the measure of linkage disequilibrium (Z_nS) across all arms. Finally, the bottom row of plots (green points) shows the scan of average sequence divergence between the ten D. mauritiana samples and a single D. melanogaster genome sequence.