1.1.2 The structure of dna (A)A nucleotide "0-Plo-PPo-P-o-cH2 BASE o 4'C Phosphate OH H Sugar (B)The four bases in DNA NH2 HN HC HC N C\3/CH N N NH2 O N Adenine(A) Cytosine(() Guanine (G) Thymine(T)1.1.2 The structure of DNA