You are attempting to introduce a gene that imports larval moth resistance to bean plants. Which of the following vectors are you most likely to use?

Options

A. Phage DNA
B. Bacterial plasmid
C. Ti plasmid
D. Yeast plasmid

Answer

To solve the question of which vector to use for introducing a gene that imparts larval moth resistance to bean plants, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Requirement**: We need to introduce a gene into bean plants that provides resistance to larval moths. This requires a suitable vector that can effectively transfer the gene into the plant cells.

2. **Evaluate the Options**:
- **Phage DNA**: This is a type of viral DNA that infects bacteria. It is not suitable for plant transformation as it primarily targets bacterial cells.
- **Bacterial Plasmid**: While bacterial plasmids are useful for cloning and transferring genes in bacteria, they are not typically used for plant transformation.
- **Ti Plasmid**: This is a plasmid derived from the bacterium *Agrobacterium tumefaciens*, which is known for its ability to transfer genes into plant cells. It is specifically designed for plant genetic engineering.
- **Yeast Plasmid**: Yeast plasmids are used for genetic manipulation in yeast cells, not for plant cells.

3. **Identify the Best Vector**: Among the options, the Ti plasmid is the most appropriate choice because it is specifically designed to introduce foreign genes into plant cells, making it the ideal vector for our purpose.

4. **Conclusion**: The correct vector to use for introducing a gene that imparts larval moth resistance to bean plants is the **Ti plasmid**.

### Final Answer:
The most likely vector to use is **Ti plasmid**.

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