At birth, Sam was found to have a genetically induced lack of an enzyme. He is placed on a diet, which includes not eating any foods containing the artificial sweetener aspartame. This diet will help prevent the development of an intellectual disability. Sam most likely has which condition?
A)fragile X syndrome
B)cretinism
C)Down syndrome
D)phenylketonuria (PKU)

Question

Quizplus · Accepted Answer

Phenylketonuria (PKU) is a genetic disorder caused by a deficiency in the enzyme phenylalanine hydroxylase, which is necessary for the metabolism of the amino acid phenylalanine. Aspartame contains phenylalanine, so individuals with PKU must avoid it to prevent the accumulation of phenylalanine, which can lead to intellectual disability and other health issues if not managed through diet.

At Birth, Sam Was Found to Have a Genetically Induced