Which one of the following genetic disease is sex-linked ? A) Royal haemophilia B) Tay-saches disease C) Cystic fibrosis D) Hypertension
Option A) Royal haemophilia is sex- linked disease. Clotting of blood is abnormally delayed even small cut will result in non stop bleeding in the affected individual. Queen Victoria was a carrier of this disease and produce haemophilic descendents so haemophilia is a royal disease.
