When DNA is exchanged via cytoplasmic bridges between two bacteria, the process is called

Options

A. transformation
B. general transduction
C. restricted transduction
D. conjugation

Answer

To answer the question regarding the process of DNA exchange via cytoplasmic bridges between two bacteria, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the specific process through which DNA is exchanged between two bacteria via cytoplasmic bridges.

2. **Identifying the Options**: The options provided are:
- Transformation
- General Transduction
- Restricted Transduction
- Conjugation

3. **Analyzing Each Option**:
- **Transformation**: This process involves a bacterium taking up free DNA from its environment. There is no cytoplasmic bridge involved in this process.
- **General Transduction**: This is a process where DNA is transferred from one bacterium to another by a virus (bacteriophage). Again, no cytoplasmic bridge is formed.
- **Restricted Transduction**: Similar to general transduction, this involves a virus transferring DNA, without the formation of a cytoplasmic bridge.
- **Conjugation**: This is the process where two bacteria form a physical connection (cytoplasmic bridge or conjugation tube) through which DNA is transferred from one bacterium to another.

4. **Conclusion**: Since the question specifically mentions the exchange of DNA via cytoplasmic bridges, the correct answer is **Conjugation**.

### Final Answer:
The process is called **Conjugation**.

---