How the rna and dna similar?

Both of these nucleic acids have a structure that involves a phosphate group bonded to a sugar bonded to a base, which comprises a nucleotide, and this nucleotide is bonded to another nucleotide which contains phosphate, a sugar, and a base, and this structure continues on and on and on. Both DNA and RNA have this in common and the mechanism by which those are bonded is that same and the bonding points are the same.