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  4. Ten E.coli cells with 15 N - dsDNA are incubated in medium containing 14 N nucleotide. After 60 minutes, how many E.coli cells will have DNA totally free from 15N ?

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Q. Ten E.coli cells with ${ }^{15} N - dsDNA$ are incubated in medium containing ${ }^{14} N$ nucleotide. After $60$ minutes, how many E.coli cells will have DNA totally free from $^{15}N$ ?

NEETNEET 2022Molecular Basis of Inheritance

Solution:

Correct answer is (d) 60 cells