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ExamsNEETBiology

Christmas disease is another name for

  1. sleeping sickness
  2. haemophilia
  3. hepatitis B
  4. Down's syndrome

Correct answer: haemophilia

Solution

Christmas disease is the older name for haemophilia, specifically haemophilia B, which involves a deficiency of clotting factor IX. It is an inherited bleeding disorder, not an infection or chromosomal syndrome.

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