Our examination of the DNA molecule in Chapter 9 revealed that lawlike forces of chemical attraction do not account for the information in DNA. Instead, DNA’s ability to carry information depends on the absence of lawlike forces of chemical attraction dictating the sequence of nucleotide bases along the double helix. You may remember (see Fig. 9.7) that DNA depends upon several chemical bonds: (1) the bonds between the sugar and phosphate molecules forming the two twisting backbones of the DNA molecule, (2) the bonds attaching individual nucleotide bases to the sugar-phosphate backbones, and
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