On which of the following did Taylor and his colleagues perform their experiments?

Select the appropriate option regarding a primer.

Heavy $DNA$ is separated from normal $DNA$ based on which of the following?

On which organism did Taylor perform experiments to prove the semi-conservative mode of chromosome replication?

$A$ $DNA$ molecule in which both strands have radioactive thymidine is allowed to duplicate in an environment containing non-radioactive thymidine. What will be the correct number of $DNA$ molecules that contain some radioactive thymidine after three duplications?

In $DNA$ strand replication, Okazaki fragments are: