What is the molecular mechanism for imprinting a gene?
A) acetylation
B) nitration
C) phosphorylation
D) methylation

Question

Quizplus · Accepted Answer

Methylation is a molecular mechanism used for gene imprinting. This involves the addition of a methyl group to a cytosine nucleotide in a gene, which can result in the silencing of the gene. This process can occur during development and can result in genes being expressed differently in males and females or being expressed differently based on which parent they were inherited from. A and C are also modifications that can occur to DNA but are not typically associated with gene imprinting. Nitration (B) typically refers to a modification of proteins, not DNA.

What Is the Molecular Mechanism for Imprinting a Gene