Hemophilia is a medical condition in which the ability of the blood to clot is severely reduced. A scientist compares children with hemophilia to children that have normal blood clotting proteins. He determines that children with hemophilia also have a family member that has hemophilia or is a carrier. What does this suggest about hemophilia?
Hemophilia is a recessive gene. Hemophilia is a sex-linked recessive disorder. The abnormal gene responsible for hemophilia is carried on the X chromosome.