Hemophilia:

Question

Hemophilia:

Quizplus · Accepted Answer

Hemophilia is an X-linked genetic disorder that results in a deficiency or absence of clotting factor VIII or clotting factor IX. It is a defect in the clotting mechanism of the blood, leading to prolonged bleeding and easy bruising. Hemophilia was known to have affected several members of the Russian royal family, including Tsar Nicholas II's son Alexei, which may have played a role in the Russian Revolution. Therefore, all the given options are correct, and the best answer is D.