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(D) The separation of heavy $DNA$ (containing $^{15}N$) from normal $DNA$ (containing $^{14}N$) is achieved using density gradient centrifugation.This

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Density gradient

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(D) The separation of heavy $DNA$ (containing $^{15}N$) from normal $DNA$ (containing $^{14}N$) is achieved using density gradient centrifugation.This technique,famously used by Meselson and Stahl in their experiment,utilizes a cesium chloride $(CsCl)$ density gradient.Since $^{15}N$ is heavier than $^{14}N$,the $DNA$ molecules containing these isotopes exhibit different densities.Therefore,they settle at different positions in the $CsCl$ solution during centrifugation,allowing for their separation based on density.

Heavy $DNA$ is separated from normal $DNA$ based on which of the following?

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