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NEET Biology question

BiologyPrinciples of Inheritance and VariationNEET

Pick out the correct statements. I. Haemophilia is a sex-linked recessive disease II. Down's syndrome is due to aneuploidy III. Phenylketonuria is an autosomal dominant gene disorder IV. Phenylketonuria is an autosomal recessive gene disorder V. Sickle cell anaemia is an X-linked recessive gene disorder

Answer: (D)

Solution

Haemophilia is indeed X-linked recessive (I, true); Down's syndrome results from trisomy 21, a form of aneuploidy (II, true); phenylketonuria is an autosomal recessive disorder, so III (claiming

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Question ID VK-119559