Statement A: ‘rop’ of gene cloning vector pBR322 codes for the proteins involved in the replication of the plasmid.
Statement B: In order to link the alien DNA, the vector needs to have very few, preferably single, recognition sites for the commonly used restriction enzymes.

• A

  Statement A is correct but statement B is incorrect.

• B

  Statement A is incorrect but statement B is correct.

• C

  Both statement A and statement B are incorrect.

• D

  Both statement A and statement B are correct.