Dna

Definition: A physical entity consisting of a sequence of deoxyribonucleotide monophosphates; a deoxyribonucleic acid. Usage: DNA should be used for pools of individual DNA molecules. For describing subregions on those molecules use DNARegion. Examples: a chromosome, a plasmid. A specific example is chromosome 7 of Homo sapiens.

Source:http://www.biopax.org/release/biopax-level3.owl#Dna