Circular DNA is a form of DNA that is found in viruses, bacteria and archaea as well as in eukaryotic cells in the form of either mitochondrial DNA or plastid DNA. This form of DNA does not contain histones. While the individual strands of a linear double helix represent two distinct and separable molecules, this need not be true for circular DNA....
Found on
http://en.wikipedia.org/wiki/Circular_DNA
<molecular biology> C.f. Linear DNA. ... Examples: plasmids, bacterial, mitochondrial, chloroplast and some viral genomes. ... (18 Nov 1997) ...
Found on
http://www.encyclo.co.uk/local/20973
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