Escherichia coli fully labelled with $15 \mathrm{~N}$ is allowed to grow in $14 \mathrm{~N}$ medium. The two strands of $DNA$ molecule of the first generation bacteria have
Escherichia coli fully labelled with $15 \mathrm{~N}$ is allowed to grow in $14 \mathrm{~N}$ medium. The two strands of $DNA$ molecule of the first generation bacteria have
- A
different density and do not resemble with their parent $DNA.$
- B
different density but resemble with their parent $DNA.$
- C
same density and resemble with their parent $DNA.$
- D
same density but do not resemble with their parent $DNA.$
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