Question

Which of the following statements about CpG islands is correct?

	There is an association exists between DNA methylation at the CpG island and acetylation of histone via recruitment of acetylases.
	Methylated CpG islands is associated with long term gene repression.
	Transcriptionally active DNA has higher frequency of methylated CpG.
	CpG islands are commonly found at the 3′ UTR regions.
	The CpG island methylation is universal across both prokaryotes and eukaryotes.