Which of the following must be true for a female to have hemophilia?

Question

Quizplus · Accepted Answer

Hemophilia is a sex-linked recessive disorder, meaning the gene responsible for hemophilia is located on the X chromosome. For a female to have hemophilia, she must inherit two copies of the hemophilia gene, one from each parent. Since males have only one X chromosome (XY), a father with hemophilia will pass the affected X chromosome to all of his daughters, making them carriers if the mother provides a normal X chromosome. However, for a daughter to have hemophilia, her mother must also be a carrier (or have hemophilia herself), providing an affected X chromosome. Therefore, the only scenario in which a female can have hemophilia is if her mother is a carrier (or has hemophilia) and her father has the disease, as stated in option D.

Which of the Following Must Be True for a Female