The following diagram showing restriction sites in E.coli cloning vector pBR322. Find the role of ' X ' and ' Y ' genes:

The gene 'X' is for protein involved in replication of Plasmid and ' $\displaystyle Y$ ' for resistance to antibiotics.

Gene ' $\displaystyle X$ ' is responsible for recognition sites and ' $\displaystyle Y$ ' is responsible for antibiotic resistance.

The gene ' $\displaystyle X$ ' is responsible for resistance to antibiotics and ' $\displaystyle Y$ ' for protein involved in the replication of Plasmid.

The gene ' $\displaystyle X$ ' is responsible for controlling the copy number of the linked DNA and ' $\displaystyle Y$ ' for protein involved in the replication of Plasmid.