Which of the following was used to create a d | vedclass

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(B) In the experiment conducted by Meselson and Stahl to prove semi-conservative $DNA$ replication,they used $E. coli$ bacteria grown in a medium cont

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$CsCl$

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(B) In the experiment conducted by Meselson and Stahl to prove semi-conservative $DNA$ replication,they used $E. coli$ bacteria grown in a medium containing $^{15}N$ (a heavy isotope of nitrogen). To separate the $DNA$ molecules based on their densities,they performed density gradient centrifugation. They used a $CsCl$ (Cesium Chloride) solution to create the density gradient,which allowed the separation of heavy $(^{15}N)$ $DNA$ from light $(^{14}N)$ $DNA$.

Which of the following was used to create a density gradient in the Meselson and Stahl experiment?

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