Sally and Tim were planning on starting a family. Sally's extended family have 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

The likelihood of having dizygotic twins is determined by a woman's genes, specifically her tendency to release multiple eggs during ovulation. This trait is often inherited and can run in families. The husband's genes do not have any direct impact on the likelihood of having twins. While environmental factors may affect fertility, they do not directly influence the likelihood of having dizygotic twins. The likelihood of having twins is primarily determined by genetics, with the environment playing a smaller role. Therefore, the correct answer is B, her genes.

Sally and Tim Were Planning on Starting a Family