Homework Solution: A culture of E. coli growing in a medium containing the normal, lighter isotope of…

    A culture of E. coli growing in a medium containing the normal, lighter isotope of nitrogen (14N) as the sole source of nitrogen is transferred to a medium containing the heavier isotope of nitrogen (15N) for two generations. What is the molar ratio of the hybrid DNA (14N-15N) to heavy DNA (15N-15N) at this point?

    Expert Answer

    A amelioration of E. coli growing in a average containing the natural, lighter isotope of nitrogen (14N) as the solitary origin of nitrogen is transferred to a average containing the heavier isotope of nitrogen (15N) control span lifetimes. What is the molar association of the impure DNA (14N-15N) to depressed DNA (15N-15N) at this subject-matter?

    Expert Exculpation

    Association is 4: 0. , foremost lifetime has 2 14N- 15N and avoid lifetime has 4 14N – 15 N.

    DUE TO semiconservative character of dna