Okazaki segments are formed during

Escherichia coli is completely labeled with $N^{15}$ and then grown in an $N^{14}$ medium. What will be the nature of the two $DNA$ strands in the first generation of bacteria?

During $DNA$ replication,which of the following does not act as a substrate?

Give scientific reasons: $DNA$ replication is a semi-conservative process.

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 $N^{15}$?

During replication of a bacterial chromosome,$DNA$ synthesis starts from a replication origin site and: