Mutagens that are effective in inducing spontaneous $DNA$ mutations are .....

Who discovered the synthesis of $DNA$ from $RNA$ in Rous sarcoma virus?

Match List-$I$ with List-$II$ and select the correct answer using the code given below in the lists.

List-$I$	List-$II$
$a$. Ligase	Joins short segments of $\text{DNA}$ together.
$b$. $\text{DNA}$ polymerase	Cuts $\text{RNA}$ at specific $\text{RNA}$ sequence.
$c$. Helicase	Breaks the hydrogen bonds between complementary pairs during $\text{DNA}$ replication.

Depending upon the chemical nature of the template ($DNA$ or $RNA$) and the nature of nucleic acids synthesized from it ($DNA$ or $RNA$),list the types of nucleic acid polymerases.

Which of the following statements is correct about $DNA$ polymerase?

Which enzyme joins the discontinuously synthesised fragments during $\text{DNA}$ replication?