Norin - 10 gene is dwarfing gene of

Options

A. Wheat
B. Rice
C. maize
D. mustard

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the Norin-10 gene and which crop it is associated with as a dwarfing gene.

2. **Identifying the Crops**: The potential options for crops that could be affected by the Norin-10 gene include wheat, rice, maize, and mustard.

3. **Analyzing Each Crop**:
- **Wheat**: The Norin-10 gene is known to induce dwarfism in wheat plants, making them shorter and more robust.
- **Rice**: The Norin-10 gene does not cause dwarfism in rice.
- **Maize**: Dwarfism in maize is attributed to different genes, specifically D8 and MPL1, not Norin-10.
- **Mustard**: Similar to rice, mustard does not exhibit dwarfism due to the Norin-10 gene.

4. **Conclusion**: Based on the analysis, the only crop that becomes dwarf due to the Norin-10 gene is wheat.

5. **Final Answer**: The Norin-10 gene is a dwarfing gene of wheat.