BotanyIdentify the correct statements with respect to Meselson and Stahl experiments.

Identify the correct statements with respect to Meselson and Stahl experiments.

  1. A

    Meselson and Stahl grew Saccharomyces cerevisiae in a medium containing 15NH4Cl

  2. B

    15N is a radioactive isotope of nitrogen which was used by Meselson and Stahl in their experiment.

  3. C

    The heavy DNA molecule could be distinguished from the normal DNA by centrifugation in a cesium chloride (CsCl) density gradient

  4. D

    Meselson and Stahl first proposed the semi-conservative mode of DNA replication.

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    Solution:

    In Meselson and Stahl experiments with E.coli to prove semiconservative mode of DNA replication, to distinguish heavy DNA from hybrid DNA and light DNA.

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