Which genetic mutation results in nonfunctioning melanocytes that do not produce melanin?

The genetic mutation that results in nonfunctioning melanocytes, which do not produce melanin, is typically associated with the condition known as albinism. Specifically, mutations in the TYR gene, which encodes the enzyme tyrosinase, are often responsible for this lack of melanin production. Tyrosinase is crucial for the synthesis of melanin, and its absence leads to the characteristic hypopigmentation seen in individuals with albinism.