Which of the following statements is true of epigenetic changes?
A) They lead to the deletion of DNA sequences.
B) They lead to the addition of extra nucleotides in DNA sequences.
C) They act as switches that turn on or turn off the expression of genes.
D) They cause the duplication of promoter sequences in genes.

Question

Quizplus · Accepted Answer

Epigenetic changes refer to modifications in gene expression that do not involve changes in the DNA sequence. These changes can include modifications to DNA or histones that affect the accessibility of genes to transcription factors and RNA polymerase, and thus can turn on or turn off the expression of specific genes. They do not involve the deletion or addition of nucleotides, or the duplication of promoter sequences in genes.

Which of the Following Statements Is True of Epigenetic Changes