DNA+Timeline+animations

[|Historical experiment Animations]: Each of these animations provide a foundational background for understanding some of the key knowledge needed to decide that DNA is THE genetic information as well as how we came to discover its structure.

View each of the following and find the corresponding diagrams of the experiments in your text (Chap 9) as you complete each in order to see the "big picture" of the experiments or concepts as a recap. Class time will only be spent clarifying and doing a quick review of these, so if you find anything confusing or questions arise, write them down to ask so we can best utilize class time on only those areas needing help.

For each of these you can skip the personal "bio" and go to the experiment link, shown by a blinking word or moving part near the scientist. (for your extra enjoyment there is a timeline above that shows what else was going on in the world!)

1. Avery's transforming factor (1944)

2. Hershey and Chase and the blender experiment (early 1950,about 1953)

3. Watson and crick and the double helix (early 1950-about 1954)

4. Meselson & Stahl replication experiment (1957)