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Bacteria were grown in a medium containi...

Bacteria were grown in a medium containing heavy isotope of nitrogen `(N^(15))` for many generations and all their DNA contained many heavy nitrogen only. A bacterium of this type was transferred to nomal medium and allowed to duplicate . After two divisions of heavy DNA is likely to be that

A

Only one daughter cell will have heavy DNA

B

Two daughter cells have normal DNA and other two have both normal and heavy DNA

C

All daughter cells have heavy DNA

D

Half daughter cells have heavy DNA and other half have normal DNA

Text Solution

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The correct Answer is:
B

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