A maternal Polycomb imprint is maintained in early Drosophila development through lower-order methylation states
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Polycomb group (PcG) proteins regulate embryonic epigenetic states by facilitating mono-, di-, and tri-methylation of H3 lysine 27 (H3K27me1/2/3). For the zygote to inherit a maternal H3K27 methylation state, PcG modifications established during oogenesis must... ...
