Home › MCQs › MDCAT Biology › Question #4297
Back to Questions
MDCAT Biology QUESTION #4297
Question 1
A baby girl is born with hemophilia, which is an X-linked recessive disorder. What are the most likely genotypes of her parents?
  • The mother is a carrier and the father is normal
  • The mother is hemophiliac and the father is normal
  • The mother is carrier and the father is hemophiliac✔️
  • Both are normal
Correct Answer Explanation
For a girl to have hemophilia ($X^h X^h$), she must receive $X^h$ from both parents. The mother must be a carrier ($X^H X^h$) and the father must be hemophiliac ($X^h Y$).