4. Explain how Meselson and Stahl proved that DNA replication was semi conservative, with reference to the diagram below? Explain the experiment? (3 marks) /3 Conservative Semi-conservative Dispersive CsCl ultracentrifugation
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coli in a medium containing heavy nitrogen isotope (N-15) so that the DNA incorporated this isotope, making it denser. Show more…
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With regards to the Meselson and Stahl experiment in 1958, which of the three patterns of DNA sedimentation would be explained by the DNA models on the right side? 15N medium One replication in 14N Two replications in 14N Pattern 1 Pattern 2 Pattern 3 Which pattern (1, 2, or 3) is explained by the model on the right? Which model of DNA replication is this, conservative, semi-conservative or dispersive?
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