Question

Haemophilia is a
A. Genetic disorder
B. Infectious disease
C. Degeneration disease
D. Deficiency disease

Answer 1

Hint: Haemophilia is caused due to the mutation of a particular gene is responsible for the clotting process of blood. It is linked to the X-chromosome recessive disorder.

Step by step answer:Haemophilia means ‘blood loving’ is an X-linked recessive disorder that results in excessive bleeding. The gene on the X chromosome of females carries coding information for making clotting factors required by the body. The clotting factors resists excessive blood flow in case of cuts or injury by making blood at the site of the cut thicker. For this mutation to be inherited, the offspring must have both the X chromosomes with an altered dysfunctional gene.
-Option A, it states the word genetic disorder. Haemophilia is caused due to genetic mutation only and thus is a genetic disorder. And as it is genetic, it is inheritable.
-Option B, it is not transmissible through physical contact or any indirect contact such as aerosols. But it only spreads through inheritance.
-Option C, Degenerating disease, means gradually increasing changes in cells of tissue deterioration. Haemophilia is not a degenerative disease. It results in excessive unstoppable bleeding at the site of injury but does not cause organ or tissue deterioration.
-Option D, it is not caused by any deficiency. It is a result of genetic mutation only which further causes deficiency of clotting factors VIII and IX.
So, the correct answer is option A, a genetic disorder.

Note: It is also known as the ‘Christmas disease’ or ‘Royal disease’ as it was identified in Queen Victoria. In this, the bleeding can occur both externally or internally even on minor cuts. It can be classified as haemophilia A, B, and C based on the deficiency of the type of clotting factors.