div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: page3 9DNA is composed of an ordered series of four chemical structures called nucleotide n bases: adenine thymine cytosine and guanine which are abbreviated A T C src=https:reader033vdocumentinreader033viewer20220424055f1e01253cf2d927c464340fhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: page3 9DNA is composed of an ordered series of four chemical structures called nucleotide n bases: adenine thymine cytosine and guanine which are abbreviated A T C src=https:reader033vdocumentinreader033viewer20220424055f1e01253cf2d927c464340fhtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdiv