Multiple Choice
Which of the following disorders is caused by individuals lacking an enzyme which is needed to break down the amino acid phenylalanine,and if not treated with a proper diet avoiding phenylalanine,severe mental retardation occurs?
A) Tay-Sachs disease
B) PKU
C) Cystic fibrosis
D) Huntington disease
E) Sickle-cell disease
Correct Answer:

Verified
Correct Answer:
Verified
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