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One human's entire DNA sequence would take up three gigabytes of storage space. Pupils explore the experiment performed by Meselson-Stahl, which proved DNA copied itself through a semi-conservative process. The instructor explains their observations of E.coli over several generations as they grew on heavy nitrogen.
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CCSS:
Adaptable
Concepts
Additional Tags
Instructional Ideas
- Set up stations related to genetics and place at the video at one of them
Classroom Considerations
- Must have a computer, Internet access, and a way to project the video
- Show before the ninth video in the series, as it briefly discusses this experiment and then moves into DNA replication
- Video 21 in a series of 30
Pros
- A short video to support DNA replication can be easily worked into a lesson
- Visuals help scholars understand how the experiment proved a semi-conservative replication of DNA
Cons
- None