Monozygotic (MZ) twins
A) share half their genes.
B) are genetically identical.
C) have the same IQ score.
D) are rarely physically identical.

Question

Quizplus · Accepted Answer

Monozygotic or identical twins develop from a single fertilized egg that splits into two embryos. As a result, they have the exact same DNA, which makes them genetically identical. While they may not be physically identical due to environmental factors, they still share the same genetic material. Therefore, option B is correct, and the other options are incorrect.

Monozygotic (MZ) Twins