Correlation coefficients between estimates of <i>B</i> and levels of polymorphism at noncoding sites (π_sil) for different BGS models.

Spearman's rank correlation coefficient (ρ) between estimates of B and πsil (P<1×10−12 for all cases). Also shown, ρ between local crossover rates (c; cM/Mb) and πsil (P<1×10−12). Results shown based on the analysis of non-overlapping 100-kb autosomal regions. aValues in parenthesis indicate the highest ρ between B and πsil along a single chromosome arm.