Assertion : Phenylketonuria is a recessive hereditary disease caused by body’s failure to oxidize an amino acid phenylalanine to tyrosine, because of a defective enzyme.

Reason : It results in the presence of phenylalanine acid in urine.

  • [AIIMS 2000]
  • A

    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

  • B

    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

  • C

    If the Assertion is correct but Reason is incorrect.

  • D

    If both the Assertion and Reason are incorrect.

Similar Questions

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$A $: Non-allosomic genic determination of sex is found in bacteria.
$R$ : Sex is dependent on some environmental factors in prokaryotes.

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  • [AIIMS 1998]