Alkaptonuria, a genetic metabolic condition, results from a lack of which enzyme?

Explanation

Alkaptonuria is caused by a deficiency of homogentisate oxidase, an enzyme involved in the breakdown of tyrosine. This deficiency leads to the accumulation of homogentisic acid, resulting in the characteristic symptoms of the disorder. Other enzymes listed are involved in different metabolic pathways and are not related to alkaptonuria.