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Question : A DNA molecule of Escherichia coli is heavy (full labelled with N15) and is allowed to duplicate in a medium containg N14. In first generation, the two daughter DNA molecules:-

Answer»

have same density but do not resemble their PARENT DNA
have DIFFERENT densities but resemble their parent DNA
have different densities and ALSO do not resemble the parent DNA
same in density and resemble their parent DNA

Answer :A


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