The chemical knives of $DNA$ are:

  • A
    Ligases
  • B
    Polymerases
  • C
    Endonucleases
  • D
    Transcriptases

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Which of the following is used as the best genetic vector in plants?

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Select the option that excludes characteristics applicable to plasmids:
$(a)$. Circular $DNA$
$(b)$. Linear $DNA$
$(c)$. Present in all bacteria
$(d)$. Contain essential genes
$(e)$. Extra chromosomal self-replicating

Plasmid is used as a carrier (vector) because:

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