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Escherichia coil fully labelled with .^(...

Escherichia coil fully labelled with `.^(15)N` is allowed to grow in `.^(14)N` medium. The two strands of `DNA` molecule of the first generation bacteria have

A

Different density and do not resemble parent DNA

B

Different density but resemble parent DNA

C

Same density and resemble parent DNA

D

Same density but not resemble parent DNA

Text Solution

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The correct Answer is:
A
Escherichia coli fully labelled with `.^(15)N` is allowed to grow in `.^(14)N` medium. The two strands of DNA molecule of the first generation bacteria have different density and do not resemble parent DNA.
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