5. (4 points) Imagine that Meselson and Stahl performed their experiment on a sample of 8 cells, each containing one copy of double-stranded DNA genome. These 8 cells had been growing on normal 14N medium. You then grew the cells for 3 generations in medium containing 1SN. How many cells would there be with DNA of 14N, 14N and 15N, and 15N composition, respectively?
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