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The Sequence Types and Features Ontology (SO) is downloaded weekly from the SourceForge CVS repository at For more information about this ontology, see the Sequence Ontology Home Page at

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Accession:SO:0000985 term browser browse the term
Definition:When a nucleotide polymer has two strands that are reverse-complement to one another and pair together.
Comment:Attributes added to describe the different kinds of replicon. SO workshop, September 2006.

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  SO ontology 0
    sequence_attribute 0
      feature_attribute 0
        strand_attribute 0
          double 0
            double_stranded_DNA_chromosome + 0
            double_stranded_RNA_chromosome + 0
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