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Web Exercises
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1. How are new strands of DNA constructed by the cell? How does the final shape of the DNA molecule impart its function?
For a 3-D molecular view of DNA, visit http://www.biology.arizona.edu/biochemistry/activities/DNA/DNA_intro.html

2. Look up variations on DNA structure by entering the terms "Z-DNA" and "B-DNA" into a search engine on the Web. Compare these forms of DNA with the one presented in this chapter.






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