All of the Following are Epigenetic Mechanisms,EXCEPT ________

Question

All of the following are epigenetic mechanisms,EXCEPT ________ .
A)changing gene expression by changing the nucleotide sequence through mutation
B)changing gene expression by adding and removing chemical groups to histone proteins
C)changing gene expression by the use of long noncoding RNAs
D)changing gene expression by the use of small noncoding RNAs
E)changing gene expression by adding and removing methyl groups to DNA

Accepted Answer

Mutation is not considered an epigenetic mechanism because it involves a change in the DNA sequence itself, rather than a modification of how the DNA is packaged or expressed. Epigenetic mechanisms involve changes in gene expression without changing the underlying DNA sequence.