Sally and Tim were planning on starting a family. Sally's extended family has several sets of dizygotic twins. When speaking with their doctor, Sally asked what could cause her to have dizygotic twins. The doctor informed her that the likelihood of having dizygotic twins will be determined by _____.

Question

Quizplus · Accepted Answer

Dizygotic twinning is influenced by genetic factors, specifically the mother's genes. A woman is more likely to have dizygotic twins if she has a family history of twinning or if she is an older mother. While factors such as nutrition and fertility treatments can increase the chances of twinning, genetics plays the largest role in whether or not a woman will have dizygotic twins.

Sally and Tim Were Planning on Starting a Family