- Rna often are made of one sequence of nucleotides
- Dna are made of two sequences of nucleotides linked together
- Hence, dna and rna are both made of nucleotides

- Dna and rna are both made of nucleotides
- Nucleotide is a kind of repeating unit in dna and rna
- So, nucleotides are the repeating subunits of dna and rna

- "Fur is a covering around the body of an animal" is not relevant

So, nucleotides are the repeating subunits of dna and rna
Question: All organisms contain DNA and RNA. What are the subunits of DNA and RNA?
Context: - Rna often are made of one sequence of nucleotides 
- Fur is a covering around the body of an animal
- Nucleotide is a kind of repeating unit in dna and rna 
- Dna are made of two sequences of nucleotides linked together