Hemophilia is a disease that causes uncontrollable bleeding. It's father has it, all of his daughters will be carriers of the disease, and about half of his sons will have the disease. An error in which macromolecule is the cause of hemophilia?
People with hemophilia are born with it. It is caused by a fault in one of the genes that determine how the body makes blood clotting factor VIII or IX. These genes are located on the X chromosome.