Epigenetic mechanisms #epigenetic #epigenetics explained #how to revise a level biology #best revision apps #a level biology revision #biology revision a levels #revision for biology a level #A level biology #A level Biology revision #biology revision app Describe two distinct ways in which the modification of chromatin structure (epigenetic mechanisms) can prevent a specific eukaryotic gene from being expressed. Answer: 1. DNA Methylation: Increased methylation (addition of methyl groups) usual
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