When Pembrey and colleagues found that the nutrition level of grandparents during their own childhood was related to the mortality rates of same-sex grandchildren, this was a possible example of
A) X chromosome inactivation.
B) transgenerational epigenetic modification.
C) Y chromosome modification.
D) familial paramutation.
E) intra-generational mutation.

Question

Quizplus · Accepted Answer

This finding is an example of transgenerational epigenetic modification, where environmental factors (like nutrition) can cause changes in gene expression that are passed down to subsequent generations without altering the DNA sequence itself.

When Pembrey and Colleagues Found That the Nutrition Level of Grandparents