Albinism is a congenital disorder resulting from the lack of the enzyme:

Options

A. Tyrosinase
B. Xanthine oxidase
C. Catalase
D. Fructokinase

Answer

**Step-by-Step Solution:**

1. **Understanding Albinism**: Albinism is a congenital disorder characterized by a deficiency in melanin production, which is responsible for the pigmentation of skin, hair, and eyes.

2. **Identifying the Enzyme**: The question asks about the enzyme whose lack leads to albinism. The key enzyme involved in melanin production is known as tyrosinase.

3. **Role of Tyrosinase**: Tyrosinase is an oxidase enzyme that catalyzes the conversion of the amino acid tyrosine into melanin. It is considered the rate-limiting enzyme in the melanin biosynthesis pathway.

4. **Evaluating the Options**: The options provided are:
- Tyrosinase
- Xanthine oxidase
- Catalase
- Fructokinase

Among these, only tyrosinase is directly involved in melanin production.

5. **Conclusion**: Since albinism results from the lack of melanin due to the absence of tyrosinase, the correct answer is tyrosinase.

**Final Answer**: Albinism is a congenital disorder resulting from the lack of the enzyme **tyrosinase**.

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