1. Chapter 12
DNA

2. Scientists Griffith - studied mice and bacteria - transformation
= process in which one bacteria takes the characteristics of another (takes in genes)

3. Avery
- altered Griffith’s exp. to see what molecule caused transformation
- added enzymes to destroy organic compounds, but not DNA  trans.
- added DNA-destroying enzymes  no trans.
Therefore, DNA is the transforming factor

4. Hershey and Chase
- bacteria, viruses, radioactive P & S
- observed which material was injected (DNA)
- Genetic material = DNA

6. Roles of DNA
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