Which of the following is true in twin studies of imprinting and epigenetics?
A) Monozygotic twins have identical CpG methylation patterns
B) CpG methylation patterns are more similar in dizygotic twins than in monozygotic twins
C) Twin studies are not useful in methylation because environment overwhelms heritability in epigenetics
D) Dizygotic twins have identical CpG methylation patterns
E) CpG methylation patterns are more similar in monozygotic twins than in dizygotic twins

Question

Quizplus · Accepted Answer

In twin studies of imprinting and epigenetics, CpG methylation patterns are more similar in monozygotic twins than in dizygotic twins. This is because monozygotic twins share the same genetic sequence, whereas dizygotic twins share only about 50% of their genetic sequence. Therefore, any differences in methylation between dizygotic twins can be attributed to environmental factors rather than genetics.

Which of the Following Is True in Twin Studies of Imprinting