nucleotide is a kind of repeating unit in dna and rna
dna_molecule_nucleotide is nucleotide. nucleotide is molecule. ribonucleotide is nucleotide. rna_molecule is polynucleotide_strand. nucleobase is rna. nucleotide is monomer. polynucleotide is nucleotide. adenine_nucleotide is nucleotide. uracil is nucleotide. oligonucleotide is nucleotide.