Figure 9From: Natural selection of protein structural and functional properties: a single nucleotide polymorphism perspectiveThe SNP A/S ratio negatively correlates with the proportion of coding sequence (CDS) within 70 bp of an exon-intron junction. Genes were grouped into bins of nine equal intervals according to the proportion of sequence within 70 bp of an exon-intron junction, and the SNP A/S ratio was obtained for each bin. Error bars represent 95th percentile confidence intervals from bootstrap resampling.Back to article page