____ is a genetic disorder in which an essential digestive enzyme is missing.

Question

Quizplus · Accepted Answer

Phenylketonuria (PKU) is caused by a genetic mutation that results in the deficiency of the enzyme phenylalanine hydroxylase, which is necessary for the breakdown of the amino acid phenylalanine. Without this enzyme, phenylalanine and its byproducts can build up to toxic levels in the body, causing developmental delays and cognitive impairment.

____ Is a Genetic Disorder in Which an Essential Digestive