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 the cities in U.S.A
D. Name of the strain of bacterias used

Answer

To answer the question about 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 known as one of the first artificial cloning vectors used in biotechnology. It is a plasmid that has been engineered for cloning purposes.

2. **Break Down the Name pBR322**:
- The name pBR322 can be divided into parts: 'p', 'B', 'R', and '322'.
- The 'p' stands for "plasmid," indicating that it is a plasmid vector.

3. **Identify the Meaning of 'B' and 'R'**:
- The 'B' in pBR322 refers to "Bolivar," which is the last name of one of the scientists involved in the development of this vector.
- The 'R' stands for "Rodrigues," which is the last name of the other scientist who contributed to the creation of this cloning vector.

4. **Understand the Number '322'**:
- The number '322' is simply a designation used to differentiate this vector from others developed in the same laboratory. It helps in identifying various vectors that were created.

5. **Conclusion**:
- Therefore, the terms 'B' and 'R' in pBR322 represent the names of the scientists Bolivar and Rodrigues, respectively.

### Final Answer:
The terms 'B' and 'R' in the name pBR322 represent Bolivar and Rodrigues, who are the scientists that developed this cloning vector.

---