Question

Genetic disorder haemophilia is characterised by excessive loss of blood. Which of the following statements is not true in relation to this disorder?

• A. It is lethal disease
• B. Factor VIII or IX may be absent
• C. It is X-linked disease
• D. It is autosomal disease

Answer 1

Answer: (D)

It is autosomal disease

• There are two major types of hemophilia, type A and type B. In hemophilia A, there is a lack of clotting factor VIII. In hemophilia B, also known as "Christmas disease," the person lacks clotting factor IX.
• It happens because of a defect in one of the clotting factor genes on the X chromosome. Hence, it is not an autosomal disease.
  
• It can be lethal depending upon the severity.

So, the correct answer is 'It is autosomal disease'.