Chapter 25 Slides Sections 1-3
Chapter 25 Slides Sections 1-3
Chapter 25 Slides Sections 1-3
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Self-Replicating RNA and the Dawn of<br />
Natural Selection<br />
• The first genetic material was probably RNA,<br />
not DNA<br />
• RNA molecules called ribozymes have been<br />
found to catalyze many different reactions<br />
For example, ribozymes can make<br />
complementary copies of short stretches of<br />
RNA<br />
AP Biology<br />
© 2011 Pearson Education, Inc.