Which statement about monozygotic twins is FALSE?
A) Monozygotic twins usually include one male and one female child.
B) Monozygotic twins are also called "identical" twins.
C) Monozygotic twins are more common now than in the past.
D) Monozygotic twins occur with equal frequency among all ethnic groups.

Question

Quizplus · Accepted Answer

Monozygotic twins are genetically identical and originate from a single fertilized egg, thus they are always of the same sex, making the statement about them usually including one male and one female child false.

Which Statement About Monozygotic Twins Is FALSE