Which of the following statements is true of DNA acetylation?
A) It switches off the expression of a gene.
B) It usually deletes the promoter sequence of a gene.
C) It switches on the expression of a gene.
D) It usually adds extra nucleotides to a sequence of DNA.

Question

Quizplus · Accepted Answer

DNA acetylation usually involves the addition of acetyl groups to histone proteins associated with DNA, which in turn opens up the chromatin structure and makes the DNA more accessible to transcription factors and RNA polymerase. This results in increased gene expression rather than turning it off. It does not involve deleting the promoter sequence or adding extra nucleotides to the sequence.

Which of the Following Statements Is True of DNA Acetylation