DNA Polymer of nucleotides: 5'End 3End adenine,thymine, cytosine,guanine ⊙5 HO Double helix associated 31 1A 2 with proteins ® "Backbone"is deoxyribose-phosphate ● Strands held together by G hydrogen bonds between AT and CG Strands are antiparallel OH 3'End 5'End Figure 8.4 • Polymer of nucleotides: adenine, thymine, cytosine, guanine • Double helix associated with proteins • "Backbone" is deoxyribose-phosphate • Strands held together by hydrogen bonds between AT and CG • Strands are antiparallel DNA Figure 8.4