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Rings of DNA

  1. Jun 7, 2004 #1
    Does DNA ever occur as a complete uniform ring, rather than a(n approximate) strand?
  2. jcsd
  3. Jun 8, 2004 #2


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    Yes, bacteria have circular chromosome(s) and circular plasmid(s).
  4. Jun 8, 2004 #3


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    Also DNA present in mitochondria, chloroplasts and some viral genomes is circular.
  5. Jun 9, 2004 #4
    Topologically Non-linked Circular Duplex DNA

    Here's a good PDF on this topic.
  6. Jun 9, 2004 #5
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