Metabolites of tryptophan can give rise to: (A) Diarrhoea, (B) Vasoconstriction, (C) Flushing, (D) All of these
Answer is D. Serotonin (a metabolite of tryptophan) causes vasoconstriction, flushing, chronic diarrhea and respiratory distress due to bronchospasm.
Albinism is a defect in the metabolism of tyrosine due to deficiency of tyrosinase.