Which of the following is true of phenylketonuria?
A) It results from a recessive gene.
B) It is a chromosomal disorder.
C) It results in death by the age of five.
D) It is caused by an accumulation of lipids in the nervous system.

Question

Quizplus · Accepted Answer

Phenylketonuria results from a recessive gene, specifically a mutation in the gene for phenylalanine hydroxylase, which is needed to break down the amino acid phenylalanine. Without this enzyme, phenylalanine and its byproducts can build up in the body and cause brain damage, intellectual disability, and other health problems.

Which of the Following Is True of Phenylketonuria