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Active marks remain after the inactivation of autosomal somatic/progenitor genes in PS. a Distribution of histone marks around PS/RS inactive Vim gene locus and PS active Sycp3 gene locus in PS. b ATD of active marks at the active genes in PS. c ATD of active marks at the silent genes in PS. d ATD of active marks in PS. These genes are activated in RS. e ATD of each silent mark in representative groups in PS. ATD, average tag density; PS, pachytene spermatocytes; RS, round spermatids
