what are the building blocks of dna and rna
Nucleotides Nucleotides are the monomers, building blocks, of nucleic acids (DNA and RNA). Each nucleotide includes three components: a phosphate, a sugar, and a nitrogenous b â¦ ase. The phosphate is bonded to the sugar through phosphodiester bonds and makes up the backbone of the molecule.here are four available nitrogenous bases in a DNA's nucleotides: adenine, thymine, guanine, and cytosine. RNA nucleotides feature the same bases with the exception of uracil, which replaces thymine.