Pathology A 4-year-old male with mental retardation, self-mutilation, and hyperuricemia is likely to have a deficiency of an enzyme involved in the: A Conversion of homogentisic acid to methylacetoacetate B Degradation of galactocerebroside C Breakdown of branched-chain amino acids D Recycling of guanine and hypoxanthine 💡 Explanation A 4-year-old male with mental retardation, self-mutilation, and hyperuricemia is likely to have a deficiency of an enzyme involved in the: ✓ Correct Answer: D. Recycling of guanine and hypoxanthine