H3K36me3 ChIP-seq in met-1 embryos detects maternal effect sterile (MES)-4-mediated histone methylation. MES-4-mediated H3K36me3 (green), pan-histone H3 (brown) and input (gray) profiles on an autosome (chromosome IV) and the X chromosome in met-1 mutant late embryos. The red circle indicates MES-4-mediated H3K36me3 signal on the left tip of the X chromosome. The signals for pan-H3 and input are partly magnified relative to that of H3K36me3. Averages from two independent experiments are shown.