Epigenetics

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6 Terms

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Epigenetics

heritable changes in gene function, without changes to the base sequence of DNA

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Methylation

changes the structure of DNA preventing RNA polymerase from accessing the DNA and transcribing genes

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Acetylation

uncoils DNA so RNA polymerase can more easily transcribe exposed genes

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how methylation happens

methyl group tags DNA

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how acetylation happens

acetyl group tags histone tails

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why epigenetics are important

controls gene expression meaning genes can be turned off when not needed