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  4. If a hybrid DNA molecule labelled with N 15 is allowed to replicate four times in culture medium having N14, the percentage of hybrid DNA after third generation would be

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Q. If a hybrid DNA molecule labelled with $N ^{15}$ is allowed to replicate four times in culture medium having $N^{14}$, the percentage of hybrid DNA after third generation would be

Molecular Basis of Inheritance

Solution:

Correct answer is (c) $12.5 \%$