Which of the following diseases is not a polygenic disease?
Correct answer: C. phenylketonuria
Phenylketonuria (PKU) is a single-gene disorder, while asthma, schizophrenia, and primary hypertension are polygenic diseases.
NCERT Biology Class 12, Chapter 7
Which of the following diseases is not a polygenic disease? NEET Biology MCQ
Last updated: July 30, 2026
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