Phenylketonuria is an example of : A. Polygenic inheritance B. Pleiotropy C. Multiple allelism D. Co-dominance
Option B Phenylketonuria (PKU) is one of the most well-known examples of pleiotropy in humans. A lack of the enzyme phenylalanine hydroxylase, which is required to convert the essential amino acid phenylalanine to tyrosine, causes this condition
