The sex-linked defect in which very slight cut produces severe bleeding is known as

The sex-linked defect in which very slight cut produces severe bleeding is known as haemophilia. Haemophilia is a genetic disorder that affects the blood's ability to clot. It is caused by a deficiency in one of the blood clotting factors, specifically factor VIII (hemophilia A) or factor IX (hemophilia B). Haemophilia is an X-linked recessive disorder, which means it primarily affects males. Females can be carriers of the gene but are usually not affected because they have two X chromosomes and the mutation typically only affects one. People with haemophilia experience prolonged bleeding after injury or surgery, as their blood does not clot properly. They may also experience spontaneous bleeding into joints and muscles, which can cause pain and permanent damage. Treatment for haemophilia involves replacement therapy, where the missing clotting factor is injected into the bloodstream to prevent bleeding.