what are the three subunits of dna
Consisting of a five-carbon sugar (deoxyribose) a phosphate group and a nitrogenous base, a nucleotide links with another nucleotides in a repeating sequence, forming a very long, continuous strand of DNA. The nitrogenous base will be one of four types: Guanine(G), Adenine (A), Cytosine (C) or Thymine (T).