Question

The most widely used plasmid is?

• A. pTi
• B. pBR$322$
• C. pRi
• D. pUC$1$

Answer 1

The correct option is B pBR$322$

B. pBR322

Solution : pBR322 is the most widely used plasmid in biotechnology as it is has all the qualities of a good vector with a origin of replication and multiple restriction sites and ampicillin and tetracycline resistance genes.

So the correct answer is "pBR322"