When Dna Replicates

a: Double helix ~
b: a zipper that unzips

What: "The sugar-phosphate backbones are represented by lines, and the sequence of base pairs is random. Let's imagine that the double helix is like a zipper that unzips, starting at one end (at the bottom in Figure 8-10). We can see that, if this zipper analogy is valid, the unwinding of the two strands will expose single bases on each strand."

Useful?
Writer: Griffiths AJF
LCC:
Where:
Date: May 6 2013 11:05 AM


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