AIPMT PRELIMS 2005 Botany Genetic Disorders MCQ Question
Haemophilia is more commonly seen in human males than in human females because:
this disease is due to an X⁻linked dominant mutation
a greater proportion of girls die in infancy
this disease is due to an X⁻linked recessive mutation
this disease is due to a Y⁻linked recessive mutation
Correct Answer
Detailed Explanation
Haemophilia is an X⁻linked recessive disorder, meaning it is more common in males who have only one X chromosome. Females would need two copies of the mutated gene to express the disease.
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