Q. Which of the following diseases results from the genetic inability to synthesize a single enzyme?
A) Colour blindness
B) Down’s syndrome
C) Phenylketonuria
D) Diabetes
Explanation
Phenylketonuria is caused by the absence or deficiency of the enzyme phenylalanine hydroxylase, which results in the accumulation of phenylalanine in all body fluids.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.