Which of the following statements is NOT true of DNA methylation?
A. Methylation is permanent and cannot be reversed.
B. It is associated with transcription repression.
C. Cytosines on both strands are usually methylated.
D. It occurs on cytosines adjacent to guanines.
E. It is carried out by DNA methyltransferases.
Ans: A. Methylation is permanent and cannot be reversed.
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