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Phenylketonuria is a sex-linked dominant trait.(a) True(b) FalseI got this question in a national level competition.Origin of the question is Inheritance Principles topic in division Principles of Inheritance and Variation of Biology – Class 12

Answer»

Right choice is (b) False

Explanation: Phenylketonuria is not a sex-linked trait. INSTEAD, it is an INBORN error of metabolism which is also inherited as an autosomal RECESSIVE trait which MEANS this disease will only OCCUR in a progeny if it carries both the recessive genes from the parents.



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