The metabolic disorder Phenylketonuria is an | vedclass

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(C) Phenylketonuria $(PKU)$ is an inborn error of metabolism that is inherited as an autosomal recessive trait.It is caused by a mutation in the gene

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Pleiotropic genes

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(C) Phenylketonuria $(PKU)$ is an inborn error of metabolism that is inherited as an autosomal recessive trait.It is caused by a mutation in the gene that codes for the enzyme phenylalanine hydroxylase.This single gene mutation leads to multiple phenotypic effects,including mental retardation,reduction in hair pigmentation,and skin problems.Since a single gene influences multiple phenotypic traits,this is a classic example of pleiotropy.

Genotype	Starch grain size and Seed shape
$BB$	Large,Round
$Bb$	Intermediate,Round
$bb$	Small,Wrinkled

The metabolic disorder Phenylketonuria is an example of which type of genetic effect?

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