To perform H3K27me3 ChIP-seq, we used the True MicroChIP & MicroPlex Library Preparation™ Package (Diagenode), according to manufacturer’s recommendations. 400 adult testes of comr or can homozygotes were used as a starting material for two biological replicates. Abcam anti-H3K27me3 antibodies (#6002) were used for chromatin immunoprecipitation. Chromatin was sheared using BioRuptor instrument (Diagenode). DNA from precipitated material and input were used for library preparation using MicroPlex Library Preparation protocol. The libraries were sequenced on the Illumina MiSeq system.