Figure 1From: Evolution of conserved secondary structures and their function in transcriptional regulation networksSNP density is lower in CSSs than in flanking sequences. SNP density was calculated in 200 bp moving windows, without overlap, centered on the CSSs with 50 windows chosen on each side of the CSSs. The SNP density at position 0 indicates the SNP density in the CSSs. SNP density in CSSs (0.86 SNP/kb) is about 2/3 of that of their flanking sequences (1.30 SNP/kb).Back to article page