Figure 1. a) Regulatory element activity profiles summarized jointly over all annotated genes in the painted lady butterfly genome assembly. The Y-axis shows the average genome-wide enrichment of H3K27ac (both promoter and enhancer regions) and H3K4me3 (predominantly promoter regions) for all genes in the annotation. The X-axis shows the absolute positions (3 kb) of the upstream and downstream stretches around the transcribed regions and the relative position summarised over all genes within the transcribed regions. TSS and TES represent the transcription start and end sites, respectively. b) Number of shared H3K27ac and H3K4me3 peaks among all groups, genome wide and within 2 kb of a TSS. The overlap represents peaks with both H3K27ac and H3K4me3 enrichment. The bottom panels show the number of observed H3K27ac (c) and H3K4me3 (d) activity peaks in different genomic regions. The pie charts illustrate the overall number of activity peaks across genomic regions and the barplot shows the percentage of exons/introns with observed activity peaks in consecutive exons (brown) and introns (blue) along genes (x-axis).