Biology A-Level
Meselson and Stahl
What Meselson and Stahl means in Biology A-Level, as defined for AQA.
Definition of Meselson and Stahl
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Reference: AQA
Scientists who tested DNA replication models by growing bacteria in a medium with the heavy isotope nitrogen-15, then transferring cells to a medium with ordinary nitrogen-14 and sampling after each replication round.
Topics that use Meselson and Stahl
- DNA replication (AQA A-Level)
Related terms
- complementary base pairing
- density gradient centrifugation
- DNA polymerase
- genetic continuity
- heavy isotope labelling
- semi-conservative replication
- sister chromatids
- template strand
Using Meselson and Stahl in the exam
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