The Nobel Prize was awarded to Kornberg and Ochoa for:

Given below are two statements.
Statement $I$ - The template strand with free $3'$ end is called leading template and the strand with free $5'$ end is called lagging template.
Statement $II$ - Replication always starts at the $3'$ end of the template strand and proceeds towards the $5'$ end of the template.
In the light of the above statements,select the correct option given below:

During $DNA$ replication,the strands separate by

During $DNA$ replication,Okazaki fragments are used to elongate:

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 $N^{15}$?

$DNA$ is synthesized from viral $RNA$ using the enzyme: