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Question
E. coli cell grown on 15N medium are transferred to 14N medium and allowed to grow for two generations. DNA extracted from these cells is ultracentrifuged in a cesium chloride density gradient. What density distribution of DNA would you expect in this experiment?
Options
One high and one low density band.
One intermediate density band.
One high and one intermediate density band.
One low and one intermediate density band.
Solution
One low and one intermediate density band.
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