Question

What does 322 mean in pBR322?

Answer 1

pBR322:

1. pBR322 is a plasmid. It is used as E.coli cloning vector.
2. In pBR322, p stands for plasmid, B for Bolivar and R for Rodriguez.
3. The number 322 in pBR322 denotes the order of synthesis that distinguishes it from the other plasmids synthesized in the same laboratory.
4. pBR322 is used in genetic engineering.

Thus, 322 in pBR322 means the order of synthesis that distinguishes it from the other plasmids synthesized in the same laboratory.