In phenylketonuria

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4.Principles of Inheritance and Variation

normal

In phenylketonuria

A

Break down of phenylalanine is rapid

B

Accumulation of phenylalanine in body

C

Chromosomal constitution of patient changes

D

$TSD$ gene situated on chromosome $15$ undergoes mutation

Solution

Phenylalanine hydroxylase enzyme is absent.

Standard 12

Biology

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