Primase is a type of ...........

$DNA$ polymerases catalyse polymerisation in:

If a normal $DNA$ molecule replicates in an $N^{15}$ medium for consecutive generations,what is the percentage of light $DNA$ in the $4^{th}$ generation (in $\%$)?

$DNA$ replication requires:

In $DNA$ strand replication, Okazaki fragments are:

The mode of $DNA$ replication in $E. coli$ is: