Which family of enzymes is directly responsible for adding methyl groups to DNA during establishment of DNA methylation patterns?
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Correct answer: DNA methyltransferases (DNMTs)
DNA methyltransferases (DNMTs) catalyze the transfer of methyl groups to cytosine residues (especially at CpG sites), thus establishing DNA methylation, a major epigenetic modification.
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More Gene Regulation and Epigenetics questions
- Which of the following histone modifications is generally associated with opening chromatin and activating transcription?
- Which histone modification is often correlated with transcriptional repression and formation of heterochromatin?
- Which non–DNA-altering mechanism can regulate gene expression post-transcriptionally in epigenetic control?
- Which statement best describes how epigenetic modifications influence chromatin structure and gene expression?
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