Figure 3.—

Silent nucleotide diversity (π_sil) in the O_ST (top) and O₃₊₄ (bottom) arrangements in each of the eight gene regions analyzed vs. distance to the nearest breakpoint of the O₃ inversion. π_sil estimates (diamonds) for each region and their 95% confidence intervals (vertical lines) are presented. Dashed and dotted horizontal lines show π_sil estimates within arrangements in the concatenated data set and the 95% confidence interval. Distance to the nearest breakpoint was inferred as in Figure 2.