Hemophilia is a disease that causes uncontrollable bleeding. if a 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?
carbohydrate
lipid
nucleic acid
protein

An error in nucleic acid is the cause of hemophilia.Explanation:Hemophilia is characterised by uncontrollable bleeding due to lack of  proper blood clotting.It is caused due to mutation in gene sequence, that codes for the protein responsible for blood clotting factor.Hemophilia is a sex-linked recessive disorder and an effected father will have all his daughter as carrier and about half of his son will have the disease.An hemophilia patient must be careful about any wounds or cut to avoid excessive blood loss.