Session Overview
This session will explain early experiments in Molecular Biology. Outlined are classic experiments by Avery, Griffith, Hershey, and Chase that demonstrated DNA was the hereditary material, background on Chargaff, Watson, Crick, and Franklin and how their discoveries contributed to the discovery of the structure of DNA, and details regarding how the semi-conservative model of DNA replication was shown by Meselson and Stahl. Learning Objectives
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Session Activities
Lecture Video
Watch the lecture video excerpt
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DNA Structure and Classic experiments, Excerpt 1 (00:46:58)
DNA Structure and Classic experiments, Excerpt 1
> Download from iTunes U (MP4 - 102.5MB)
> Download from Internet Archive (MP4 - 102.5MB)
Check Yourself
Session Activities
Lecture Video
Watch the lecture video excerpt
-
DNA Structure and Classic experiments, Excerpt 2 (00:06:59)
DNA Structure and Classic experiments, Excerpt 2
> Download from iTunes U (MP4 - 15.3MB)
> Download from Internet Archive (MP4 - 15.3MB)
Check Yourself
Session Activities
Practice Problems
Further Study
Suggested topics for further study in an introductory-level Biology textbook
- Classic experiments by Avery, Griffith, and Hershey/Chase
- Chargaff
- Watson, Crick, and Franklin
- Semi-conservative model of DNA replication
Useful Links
- Hershey and Chase Experiment
- Meselson and Stahl Experiment
- "Molecular Structure of Nucleic Acids" (The original Watson and Crick paper)