Meselson-Stahl Experiment

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Biology, Chemistry, Physics, Science

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11th Grade - University

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Practice Problem

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Hard

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The podcast discusses the Meselson-Stahl experiment, which confirmed the semi-conservative model of DNA replication. After Watson and Crick's discovery of the DNA double helix, three replication models were proposed: semi-conservative, conservative, and dispersive. Meselson and Stahl used E. coli grown in heavy nitrogen to determine the correct model. Their experiment showed that DNA replication involves splitting the DNA in half and adding new strands, supporting the semi-conservative model.

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OPEN ENDED QUESTION

3 mins • 1 pt

What were the results of the experiment regarding the density of DNA?

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OPEN ENDED QUESTION

3 mins • 1 pt

Explain the significance of the findings from the Meselson-Stahl experiment.

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