Genomic Imprinting, DNA Methylation, and Histone Acetylation are All Examples

Question

Genomic imprinting, DNA methylation, and histone acetylation are all examples of
A) genetic mutation.
B) chromosomal rearrangements.
C) karyotypes.
D) epigenetic phenomena.
E) translocation.

Accepted Answer

Genomic imprinting, DNA methylation, and histone acetylation are all examples of epigenetic phenomena - changes in gene expression without changing the DNA sequence itself. Epigenetic modifications affect how genes are read by the cellular machinery, and can be influenced by a variety of environmental and developmental factors.