Phenylketonuria is

A) an enzyme disorder.
B) transmitted by a dominant gene.
C) a disorder that manifests itself in all children of carriers.
D) an illness that can only occur in boys.

Phenylketonuria

A genetic disorder resulting in the inability to metabolize the amino acid phenylalanine, necessitating a strict diet to prevent intellectual disability.

Enzyme Disorder

A medical condition resulting from deficiencies or malfunctions of enzymes, affecting bodily processes.