NEET Botany (general) MCQ Question
Which of the following statements about thalassemia and inheritance is correct?
Thalassemia is an autosome-linked recessive blood disease caused by mutations affecting hemoglobin synthesis.
Only beta thalassemia is caused by a deletion of genes on chromosome 16.
Thalassemia is inherited only from affected parents, and unaffected carriers do not pass on the disease.
Both α and β thalassemia result from the same genetic mutation affecting hemoglobin chains.
Correct Answer
Detailed Explanation
Thalassemia is indeed an autosome-linked recessive blood disease caused by mutations or deletions that affect the synthesis of hemoglobin chains. Option B is incorrect as both forms are affected by genes on chromosome 16, not only beta. Option C is false because unaffected carriers can pass on the disease. Option D is incorrect as α and β thalassemia involve different genes affecting different globin chains.
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