Biology, 21.04.2020 20:45 josephnievesr31
A scientist used a radioactive isotope of nitrogen to label the nitrogenous bases of the DNA in bacterial cells. The labeled cells were then allowed to grow and divide for one generation in a medium of non-radioactive nitrogen. Where is the radioactive nitrogen in the DNA of the bacterial cells? A. distributed evenly among all of the DNA B. in both strands of the DNA of half of the cells C. in one strand of the DNA of half of the cells D. in one strand of the DNA of all of the cells
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A scientist used a radioactive isotope of nitrogen to label the nitrogenous bases of the DNA in bact...
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