... R, Narita T, Pask AJ, Shaw G, Wang C, Kohda T, AlsopAE, Marshall Graves JA, Kohara Y, Ishino F, Renfree MB, Kaneko-Ishino T: Retrotransposon silencing by DNA methylation candrive mammalian ... mam-malian imprinted domains in monotreme and marsupialmammals. BMC Evol Biol 2007, 7:157.15. Edwards CA, Mungall AJ, Matthews L, Ryder E, Gray DJ, Pask AJ, ShawG, Graves JA, Rogers J, SAVOIR ... therian mammals and may have evolved as a secondary mechanism to stabilize the silencing mechanism.DiscussionOur platypus genome analyses have confirmed that eutherianimprinted clusters are...