A genetic abnormality transmitted by a recessive gene that prevents an infant from metabolizing an amino acid found in many foods, resulting in intellectual developmental disorder and emotional disturbance, is ______.
A) Klinefelter's syndrome
B) Turner's syndrome
C) phenylketonuria
D) Tay-Sachs disease

Question

Quizplus · Accepted Answer

Phenylketonuria (PKU) is a genetic disorder transmitted by a recessive gene and results in the inability to metabolize the amino acid phenylalanine. This leads to a buildup of phenylalanine in the body, causing intellectual developmental disorder and emotional disturbance if left untreated. Klinefelter's syndrome (A) and Turner's syndrome (B) are genetic disorders caused by abnormalities in sex chromosomes, while Tay-Sachs disease (D) is a genetic disorder that primarily affects the nervous system. None of these conditions are related to the inability to metabolize phenylalanine.

A Genetic Abnormality Transmitted by a Recessive Gene That Prevents