In plasmid pBR 322, 'BR' stands for

Options

A. Baculovirus and Retrovirus
B. Boyer and Reed
C. Bollivar and Rodrigues
D. Bacillus and Rhizobium

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the meaning of 'BR' in the plasmid pBR322.

2. **Identifying the Components of the Name**: The name pBR322 can be broken down into parts:
- 'p' stands for plasmid.
- 'BR' refers to the names of the scientists associated with the discovery of this plasmid.
- '322' is a numerical designation.

3. **Recalling the Scientists**: The 'BR' in pBR322 stands for the surnames of two scientists:
- Bolivar
- Rogers

4. **Conclusion**: Therefore, 'BR' in pBR322 stands for Bolivar and Rogers.

### Final Answer:
In plasmid pBR322, 'BR' stands for Bolivar and Rogers.

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