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Phenylketonuria is an autosomal recessive defect afffecting the metabolism of the amino acid phenylalanine and can...

Phenylketonuria is an autosomal recessive defect afffecting the metabolism of the amino

acid phenylalanine and can lead to severe intellectual disability. About one in 10,000 newborn

Caucasians are affected. Assuming H-W conditions, what is the frequency of heterozygous

carriers?

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