Alkaptonuria, an inherited metabolic disorder of L0tyrosine metabolism is due to lack of_____________? September 27, 2025 by Admin A. Parahydroxy phenyl pyruvate Hydroxylase B. Tyrosine transaminase C. Homogentisate oxidase D. Tyrosine oxidase ✅ The correct answer is option C. Homogentisate oxidase.