Figure 3
From: Gradual transition from mosaic to global DNA methylation patterns during deuterostome evolution
Histograms showing the CpG-score frequencies in 2-kb genomic fragments. Each histogram covers the whole genome of the (A) sea urchin, (B) lancelet (amphioxus), (C) ascidian, (D) zebrafish, (E) frog, (F) anole (a kind of lizard), (G) chicken, (H) platypus, (I) opossum, (J) dog, (K) mouse, or (L) human. Apparent bimodal distributions are seen in the invertebrate deuterostomes. All distributions were compulsorily separated into two normal distributions. The two decomposed Gaussian curves and a merged curve are also drawn on each histogram.