dna is a kind of molecule
dna_molecule is dna. human_dna_molecule is dna_molecule. dna_molecule is dna_polymer. dna_molecule is nucleic_acid_molecule. dna is double_stranded_molecule. dna_molecule is molecule. dna is complex_molecule. dna is molecule. dna_molecule is double_helix. prokaryotic_dna_molecule is dna_molecule.