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

During $DNA$ replication, the term leading template is applied to the one which replicates itself in $A$ and the replication is $B$.

Replication was allowed to take place in the presence of radioactive deoxynucleotide precursors in $E. coli$ that was a mutant for $DNA$ ligase. Newly synthesised radioactive $DNA$ was purified and strands were separated by denaturation. These were centrifuged using density gradient centrifugation. Which of the following would be a correct result?

If a hybrid $\text{DNA}$ $(N^{15}N^{14})$ is allowed to replicate in an $N^{14}$ medium,after three generations,how many $\text{DNA}$ molecules will contain $N^{15}$?

What is the mode of $DNA$ replication in $E. coli$?

Briefly describe the scheme of $DNA$ replication proposed by Watson and Crick.