Hemophilia A is
A)due to an X-linked dominant gene.
B)passed from affected males to their sons.
C)more common in females.
D)a defect in the clotting mechanism.

Question

Quizplus · Accepted Answer

Hemophilia A is caused by a genetic defect that results in a deficiency or absence of clotting factor VIII, which is necessary for normal blood clotting. This leads to prolonged bleeding and increased risk of hemorrhage, even from minor injuries. Hemophilia A is a genetic disorder that is passed down from parents to their children, but it is not due to an X-linked dominant gene. It is an X-linked recessive disorder, which means that it primarily affects males and is passed from carrier females to their sons. Hemophilia A is not more common in females; in fact, females are typically unaffected carriers of the disorder.

Hemophilia a Is