SRX4082380 SRA703806 H3K27me3_wt_ya_rep1;_Caenorhabditis_elegans;_ChIP-Seq H3K27me3_wt_ya_rep1;_Caenorhabditis_elegans;_Ch... H3K27me3|young adults H3K27me3 N2|young adults N2 ChIP-Seq