(1) The derivatives of purine are called adenine and guanine, and the derivatives of pyrimidine are called thymine , cytosine and uracil.(2) The nitrogen-containing bases are adenine, thymine , cytosine, and guanine; these names are used to identify the nucleotides.(3) The film's name comes from the initials of the four DNA bases of our genetic code: guanine, adenine, cytosine and thymine .(4) Of the four bases that make up DNA - adenine, thymine , cytosine and guanine - only cytosine has the potential to be methylated in humans and most mammals.(5) In DNA the bases pair to form a ladder-like structure, with adenine paired with thymine and guanine with cytosine.
