Biology, 07.07.2021 01:00 linettepizarro1233
A bacterial culture is being grown in a medium containing a light isotope of nitrogen (14N), it is moved to a medium containing a heavier isotope of nitrogen (15N). After twenty minutes you take a DNA sample and spin it down in cesium chloride by centrifugation and see one distinct band of DNA. Twenty minutes later you take another sample and see two distinct bands of DNA with the second being heavier than the first. If you took another sample twenty minutes after that (after a third replication) how many bands would there be given the semi-conservative model is true
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A bacterial culture is being grown in a medium containing a light isotope of nitrogen (14N), it is m...
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