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Which isotopes were used by the researchers who first confirmed the semiconservative nature of DNA replication?(a) Nitrogen(b) Carbon(c) Oxygen(d) SulfurThis question was addressed to me in exam.Enquiry is from DNA Replication topic in portion DNA Replication and Repair, Cellular Reproduction of Cell Biology

Answer»

Right choice is (a) Nitrogen

Easiest explanation: In 1957, researchers used the Nitrogen isotopes to confirm the semiconservative nature of DNA replication. At the California Institute of TECHNOLOGY, the researches GREW bacteria in TWO subsequent mediums containing ^15N and ^14N isotopes.



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