An `alpha`- globin chain is coded by the gene present on __________chromosome.

Options

A. `10^(th)`
B. `12^(th)`
C. `14^(th)`
D. `16^(th)`

Answer

To solve the question regarding the chromosome coding for the alpha-globin chain, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Hemoglobin Structure**:
- Hemoglobin is a protein in red blood cells that carries oxygen and carbon dioxide. It consists of four polypeptide chains: two alpha (α) chains and two beta (β) chains.

2. **Identifying the Genes**:
- The genes responsible for coding the globin chains are located on specific chromosomes. The alpha-globin gene is distinct from the beta-globin gene.

3. **Locating the Alpha-Globin Gene**:
- The gene that codes for the alpha-globin chain is located on chromosome 16.

4. **Conclusion**:
- Therefore, the answer to the question is that the alpha-globin chain is coded by the gene present on chromosome 16.

### Final Answer:
The alpha-globin chain is coded by the gene present on **chromosome 16**.

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