What is a plasmid?

  • A
    $A$ piece of $DNA$ that acts as a vector
  • B
    $A$ piece connecting two genes
  • C
    An $mRNA$ that acts as a carrier
  • D
    $A$ photosynthetic fragment

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Restriction enzymes are . . . . . . .

Which of the following is not a restriction endonuclease?

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