What is a monomer of DNA and RNA?

Answer:
Nucleotides. A single nucleotide contains a phosphate group, a sugar (ribose or deoxyribose) and a nitrogen base, which can be adenine, guanine, cytosine, and either thymine (if DNA) or uracil (if RNA).
First answer by Tristan Isaacs. Last edit by Tristan Isaacs. Contributor trust: 8 [recommend contributor recommended]. Question popularity: 1 [recommend question].