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 not completely understood until decades later.

Question

Quizplus · Accepted Answer

Methylation is a process by which a methyl group is added to DNA, which often results in the repression of gene expression. Therefore, choice C is correct. Choices A and B are incorrect because methylation does not directly initiate DNA transcription or stop DNA translation. Choice D is incorrect because linkage refers to the tendency of genes on the same chromosome to be inherited together and has nothing to do with methylation.

A Small Molecule Known as a Methyl Group Can Attach