How do bacteria exchange DNA?

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The exchange of DNA in bacteria takes place in three ways:

  1. Conjugation: It is a form of gene transfer and recombination that requires direct cell to cell contact.
  2. Transformation: In this type of transfer, the piece of free DNA is taken up by the bacterial cell and integrated into the recipient's genome.
  3. Transduction: Exchange of DNA takes place by means of bacteriophages.
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