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What are the plasmids composed of? Are they composed of genomic or non-genomic DNA?

I guess the answer is "genomic DNA" but I'm not sure.

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    $\begingroup$ Is this a homework question? What definitions of "plasmid" and "genetic DNA" are you going by? $\endgroup$
    – Superbest
    Nov 16, 2014 at 0:29
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    $\begingroup$ No...it's not a homework q...just one of my classmates was arguing about this....Actually I think you guys are just PARANOID about homework q....if it was a homework q. I think I have enough sense to put a 'homework' tag.... $\endgroup$ Nov 16, 2014 at 15:08

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You probably mean genomic and non-genomic DNA - Plasmids are small rings of non-genomic double-stranded DNA in Bacteria. They replicate mostly indepently of the genomic DNA can can occur from a few to several hundred copies per cell. See the illustration from the Wikipedia:

enter image description here

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    $\begingroup$ Not only in bacteria. $\endgroup$
    – alephreish
    Nov 15, 2014 at 18:30
  • $\begingroup$ @chris, yeah... $\endgroup$ Nov 16, 2014 at 15:11

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