Genetic imprinting
A) is due to DNA mutations.
B) affects all genes.
C) assures that both the maternal and paternal copies of each gene are expressed.
D) is due to epigenetic changes.
E) has not been seen in any genetic disorder.

Question

Quizplus · Accepted Answer

Genetic imprinting is a phenomenon where specific genes are expressed differently depending on whether they are inherited from the mother or the father. This is not due to DNA mutations, but rather epigenetic changes such as DNA methylation or histone modifications. It does not affect all genes, only certain ones that are subject to imprinting. It does not assure that both maternal and paternal copies are expressed, rather one copy is silenced. Genetic imprinting has been implicated in several genetic disorders.

Genetic Imprinting