A small molecule known as a methyl group can attach to DNA.Which of the following statements about this event is true?
A) This is the event that initiates DNA transcription.
B) This is the event that stops DNA translation.
C) This event, called methylation, usually stops or represses the expression of a gene.
D) This event, called linkage, was discovered by Mendel but was not completely understood until decades later.

Question

Quizplus · Accepted Answer

Methylation involves the addition of a methyl group to DNA, typically at cytosine bases, and is known to repress gene expression by preventing transcription factors from accessing the DNA.

A Small Molecule Known as a Methyl Group Can Attach