[B] the disease is carried by males and expressed by females
[C] the disease is carried by males & females and expressed by males
[D] none of the above
Hemophilia is an inherited bleeding disorder in which a person lacks or has low levels of certain proteins called “clotting factors” and as a result, the blood doesn’t clot properly. Clotting factor is a protein in blood that controls bleeding. If you have hemophilia, you may bleed for a longer time after an injury than you would if your blood clotted normally. Hemophilia is quite rare. About 1 in 10,000 people are born with it.