This blood-clotting problem is usually sex-linked.

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Hemophilia is a genetic disease caused by a deficiency in clotting factors, which affects a person's ability to stop bleeding. It is caused by mutations in genes on the X chromosome and is therefore sex-linked, with males being more commonly affected than females. Sickle-cell anemia is also a genetic disease but is not related to blood clotting. Red-green color blindness and albinism are also genetic diseases but are not related to blood clotting.

This Blood-Clotting Problem Is Usually Sex-Linked