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A DNA molecule in E. coli is heavy and l...

A DNA molecule in E. coli is heavy and labelled with `N^(15)`. Iit is allowed to replicate in a medium containing `N^(14)`. After one generation of replication, the two daughter molecules will

A

be similar in density but differ from that of parent of DNA

B

differ in density as well as from that of the parent DNA

C

have same density as that of parent DNA

D

differ in density but resemble that parent DNA

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A
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