Name the heavy isotope used by Meselson and Stahl for proving the semiconservative mode of DNA.

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15NH4Cl

14NH3Cl2

13NH2Cl3

13NH2Cl

answer is A.

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Detailed Solution

In the experiment proving semiconservative model of DNA, Matthew Meselson and Franklin Stahl used heavy isotope 15NH4Cl.

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