Enzyme deficiency in Alkaptonuria is

B. i.e. (Homogentisate oxidase) (259 - Harper 27th)ALKAPTONURIA = lack of enzyme homogentisate oxidase enzyme most striking clinical manifestation - occurrence of dark urine black on standing in air*** Classical type Galactosemia - Galactose-1 p- uridyl transferase enzyme* Classical phenylketonuria - Phenyl alanine hydroxylase* Type I Tyrosinemia - Fumatyl acetoacetate hydrolase enzyme* Type II Tyrosinemia - Hepatic transaminase enzyme.