The term 'B' and 'R' in the name pBR322 represents which of the following ?

Options

A. Name of the scientists
B. Name of the restriction endonuclease enzymes
C. Name of cities in U.S.A.
D. Name of the strain of bacteria used

Answer

To solve the question regarding what the terms 'B' and 'R' in the name pBR322 represent, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Context of pBR322**:
- pBR322 is a well-known plasmid used as a cloning vector in molecular biology. It was one of the first plasmids widely used for cloning in E. coli.

2. **Identify the Components of the Name**:
- The name pBR322 can be broken down into parts:
- 'p' stands for plasmid.
- 'B' and 'R' are the components we need to focus on.

3. **Determine What 'B' and 'R' Stand For**:
- The 'B' in pBR322 stands for "Bolivar" and the 'R' stands for "Rodrigues". These refer to the names of the scientists who developed this plasmid.

4. **Evaluate the Options Given**:
- Option 1: Names of the scientists - This is correct as 'B' and 'R' refer to Bolivar and Rodrigues.
- Option 2: Names of restriction endonuclease enzymes - This is incorrect.
- Option 3: Names of cities in the USA - This is incorrect.
- Option 4: Names of the strain of bacteria used - This is incorrect.

5. **Conclude the Answer**:
- Based on the analysis, the correct answer is that 'B' and 'R' in pBR322 represent the names of the scientists Bolivar and Rodrigues.

### Final Answer:
The terms 'B' and 'R' in the name pBR322 represent the names of the scientists Bolivar and Rodrigues.

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