Figure 1.

Correlations between CGI density and genomic features in nine mammalian genomes. The platypus chromosomes were excluded because of incomplete genome sequence data and chromosome data. (a) CGI density (per Mb) versus number of chromosome pairs. (b) CGI density (per Mb) versus log₁₀(chromosome size). The Y chromosomes were excluded because of insufficient data. (c) CGI density (per Mb) versus chromosome GC content (%). (d) CGI density (per Mb) versus chromosome Obs_CpG/Exp_CpG.