Fig. 6From: Long-term experimental evolution reveals purifying selection on piRNA-mediated control of transposable element expressionChromatin environment controls alterations in small RNA-mediated silencing in MA lines. a–c Expression changes in all TEs in regulated (H3K27me3), classical heterochromatin (H3K9me2) and active (H3K36me3) chromatin domains. p values are Wilcoxon unpaired test. See Additional File 1: Fig. S2 for the number of TEs in each domain. d–f Changes in 22G RNAs mapping to all TEs in regulated, classic heterochromatin and active domainsBack to article page