It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for genetic material. This is written by

If the base sequence in one polynucleotide series of $DNA$ is $G-C-A-T-G$, what shall be the sequence in the replicated complementary strand

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

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 normal medium and allowed to duplicate. After two divisions of heavy $DNA$ is likely to be that

For proving the semi conservative mode of replication of $DNA$ , $E-coli$, were first grown in the medium containing ?

Choose the correct statement about the direction of $DNA$ strand