M Prep | MCAT 2015 Question of the Day - Prep, Practice Questions, and More!

Q:	Dave and Janet want to start a family. Janet has an X-linked dominant disorder and Dave does not. Which of the following statements does not hold true? Assume that Janet is heterozygous for this trait.

Each female child will have a 50% chance of inheriting the disease

One of Janet's parents must have had this disorder

If Dave had this disorder and Janet did not, all of their male children would have had the disorder

Female and male children each have an equal chance of inheriting the disease