One of the most important ways in which DNA is modified after synthesis is
A) methylation of bases
B) covalent binding of proteins to the sugar moieties
C) splicing of RNA "leaders"
D) electrostatic binding of negatively charged counterions

Question

Quizplus · Accepted Answer

Methylation of bases, particularly cytosine bases in the context of CpG islands, is a crucial epigenetic modification that affects gene expression without altering the DNA sequence itself. This process can lead to changes in the structure of chromatin and accessibility of DNA to transcription machinery, thereby regulating gene activity.

One of the Most Important Ways in Which DNA Is