DNA regions that are transcriptionally silenced by hypercondensation have often undergone a modification of their cytosine residues termed
A)hyperoxidation.
B)methylation.
C)dephosphorylation.
D)phosphorylation.
E)integration.

Question

Quizplus · Accepted Answer

DNA regions that are transcriptionally silenced by hypercondensation have often undergone a modification of their cytosine residues called methylation. Methylation adds a methyl group to the cytosine ring, which modifies its chemical properties and can lead to silencing of gene expression.

DNA Regions That Are Transcriptionally Silenced by Hypercondensation Have Often