In about ____ of fraternal twin pairs, one twin is a boy and other is a girl.
A) 10 percent
B) one third
C) half
D) 80 percent

Question

Quizplus · Accepted Answer

Fraternal twins come from two separate eggs that are fertilized by two different sperm. The gender of each baby is determined independently, resulting in approximately 50% of fraternal twin pairs being a boy and a girl. So the best answer is half.

In About ____ of Fraternal Twin Pairs, One Twin Is