E. coli cells were grown in N15 medium for several generations and - TopicsExpress



          

E. coli cells were grown in N15 medium for several generations and then shifted to normal medium for one generation. If the DNA isolated from the culture would be centrifuged on a CsCl equilibrium density gradient, the result will be 1. a single band of double helix DNA consisting of one strand with N14 and another with N15 label. 2. single band of double helix DNA consisting of N14 and N15 in both the strands. 3. two bands containing double helix DNA each containing both N14 and N15 label. 4. two bands containing single stranded DNA one with N14 and other with N15 label.
Posted on: Sun, 16 Feb 2014 14:40:21 +0000

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