Fig. 4.

DNA methylation levels across genomic elements in fetal and adult sheep. (a) Adult, (b) fetus. The abscissa represents different genomic elements, with a, b, c, d, e, f, and g denoting upstream, first exon, first intron, inner exon, inner intron, last exon, and downstream, respectively. The left ordinate represents the methylation levels of CG/CHG contexts, and the right ordinate represents the methylation levels of the CHH context. The dotted, green, vertical line represents the transcription start site (TSS), and the red, orange, and blue solid lines represent CG, CHH, and CHG, respectively