Transcription and chromatin determinants of de novo DNA methylation timing in oocytes

Abstract excerpt

BACKGROUND: Gametogenesis in mammals entails profound re-patterning of the epigenome. In the female germline, DNA methylation is acquired late in oogenesis from an essentially unmethylated baseline and is established largely as a consequence of transcription events. Molecular and functional studies have shown that imprinted genes become methylated at different times during oocyte growth; however, little is known...

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