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Question
Assertion :Phenylketonuria is a recessive hereditary disease caused by failure of the body to oxidise an amino acid phenylalanine to tyrosine because of defective enzyme. Reason: It results in presence of phenylalanine in urine.
Assertion :Phenylketonuria is a recessive hereditary disease caused by failure of the body to oxidise an amino acid phenylalanine to tyrosine because of defective enzyme. Reason: It results in presence of phenylalanine in urine.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Phenylketonuria is an autosomal recessive mutation of a gene on chromosome number 12. It occurs when there is a deficiency of liver enzyme phenylalanine hydroxylase that converts phenylalanine into tyrosine. There is a high level of phenylalanine in the blood and tissue fluid. Increased phenylalanine in the blood interfere with brain development, muscle and cartilage of the legs may be defective and the patient cannot walk properly.So, the correct option is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'
Phenylketonuria is an autosomal recessive mutation of a gene on chromosome number 12. It occurs when there is a deficiency of liver enzyme phenylalanine hydroxylase that converts phenylalanine into tyrosine. There is a high level of phenylalanine in the blood and tissue fluid. Increased phenylalanine in the blood interfere with brain development, muscle and cartilage of the legs may be defective and the patient cannot walk properly.
So, the correct option is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'
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