Two bacteria found to be very useful in genetic engineering experiments are

  • A
    Nitrosomonas and Klebsiella
  • B
    Escherichia and Agrobacterium
  • C
    Nitrobacter and Azotobacter
  • D
    Rhizobium and Diplococcus

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Which enzyme is used to join foreign $DNA$ to a plasmid?

$pBR-322$ is frequently used as a cloning vector. What is it?

Which one is not a restriction enzyme?

The enzyme known as restriction endonuclease:

The two antibiotic resistance genes on vector $pBR322$ are for

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