試題詳解

4. What is the role of DNA methylation in eukaryotes?
(A) To aid in silencing transcription.
(B) To protect the DNA from restriction endonucleases.
(C) To prevent nucleosome formation on that region of DNA.
(D) DNA methylation does not occur in eukaryotes, only histones are methylated.
(E) To distinguish the active X chromosome from the inactive X chromosome in counting.