Question : A child has PKU disorder, but neither parent has PKU. What – InterviewSolution

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1.	Question : A child has PKU disorder, but neither parent has PKU. What is the genotype of the parents? Give reason for your answer.
Answer» Solution : Both the PARENTS of a PKU child will be heterozygous for this GENE. PKU is AUTOSOMAL RECESSIVE disorder. It appears only when the child is homozygous having both recessive genes. A PERSON heterozygous for PKU will be normal but having one normal and one defective gene.

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