Which of the following is not an epigenetic change?: (A) Acetylation of histone, (B) Methylation of DNA, (C) Methylation of histone, (D) Point mutation
Answer is D. Epigenetics Study of heritable gene expression without change in the nucleotide sequences. Major epigenetic mechanisms: DNA methylation Histone modifications Alteration in Chromatin Structure microRNAs Point mutation Changes the nucleotide sequence. Does not come under the definition of epigenetic change.