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प्रश्न
A young boy named Arjun has sickle-shaped red blood cells. He experiences frequent fatigue and shows signs of damage to his kidney. Genetic analysis reveals a single point mutation in the gene coding for β-globin.
Which one of the following genetic phenomena is most likely responsible for the multiple symptoms observed in Arjun?
विकल्प
Polygenic inheritance
Codominance
Pleiotropy
Incomplete dominance
MCQ
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उत्तर
Pleiotropy
Explanation:
This is pleiotropy because one gene mutation (β-globin) produces multiple phenotypic effects such as sickling of RBCs, fatigue (anaemia) and kidney damage.
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