What chemical change occurs to histones that will turn on genetic transcription?
A)acetylation
B)acidification
C)phosphorylation
D)differentiation

Question

Quizplus · Accepted Answer

Acetylation is a chemical change that occurs to histones where acetyl groups are added to the histone tails. This addition of acetyl groups results in the relaxation of chromatin structure and opens up DNA for transcriptional machinery, ultimately leading to gene expression.

Answer: C) phosphorylation 
 Phosphorylation is another chemical modification that can occur to histones. It involves the addition of a phosphate group to the histone tails. This can also result in changes in the chromatin structure and gene expression, but the effects are more variable and less predictable than acetylation.

What Chemical Change Occurs to Histones That Will Turn on Genetic