
SNP enrichment in persistent boundaries. (A) Fold enrichment of SNPs in different subsets of boundary regions, across different categories (SNP parent terms). We measured the enrichment of SNPs in time point–specific boundaries (day 0–80) of cardiomyocyte differentiation, in boundaries common to the first two or the last two time points, in the union of boundaries (ANY), and in the intersection of boundaries across all time points (ALL). (B) A SNP landing in a boundary persistent across all time points (only day 0 and day 80 visualized here) and a CTCF binding site.











