Biology Inheritance / Variation & Genetics ETEA 2023 Retake
PMDC Verified Question 49 of 94
Which of the following types of haemophilia are more common in the human population?
A
Haemophilia A
B
Haemophilia B
C
Haemophilia C
D
Haemophilia VII
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Haemophilia A
Concept:

Haemophilia exists in different forms depending on which specific clotting factor is mutated.

Solution:

  • Haemophilia A, caused by a deficiency of Clotting Factor VIII, is by far the most common type of haemophilia in the human population (accounting for about 80-85% of cases).
  • It is an X-linked recessive disorder.


Why other options are incorrect:

  • Haemophilia B: Factor IX deficiency, much less common (also known as Christmas disease).
  • Haemophilia C: Factor XI deficiency, a rare autosomal recessive form.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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