Fig. 6
From: Genome-wide DNA methylome variation in two genetically distinct chicken lines using MethylC-seq
Relationship between DNA methylation and expression levels of genes in the chicken. a-b Average methylation degree across gene promoters and gene bodies. Genes were classified into five quintiles according to mRNA expression level: 1st quintile was the lowest and 5th was the highest. The promoter was defined as the region spanning from 1.5Â kb upstream to 0.5Â kb downstream of the transcript start site. c-d Box plots showed average methylation degree of promoters and gene bodies in each gene expression quintile