Question

Match List I(Enzyme) with List II(Function) and select the correct answer using the codes given the lists.

List-I	List-II
a. DNA Ligase	$1$. Catalyses the covalent union of segments of an interrupted sugarphosphate strand in double-stranded DNA
b. DNA polymerase	$2$. End nuclease that digests either single stranded or double stranded DNA
c. DNase I	$3$. Produces single or double stranded breaks in DNA during replication to release tension brought about by the separation of double strands
d. DNA topoisomerase	$4$. Catalyses the formation of DNA worn deoxyribonucleotides using one strand of DNA as template

• A. A-$1$, B-$4$, C-$3$, D-$2$
• B. A-$4$, B-$1$, C-$2$, D-$3$
• C. A-$1$, B-$4$, C-$2$, D-$3$
• D. A-$4$, B-$1$, C-$3$, D-$2$

Answer 1

The correct option is C A-$1$, B-$4$, C-$2$, D-$3$

DNA replication is the process by which DNA makes a copy of itself during cell division. These are the enzymes that play an important role in DNA replication. their roles are:-

DNA Ligase- Catalyses the covalent union of segments of an interrupted sugar phosphate strand in double-stranded DNA.

DNA topoisomerase- Produces single or double stranded breaks in DNA during replication to release tension brought about by the separation of double strands.

DNA polymerase- Catalyses the formation of DNA worn deoxyribonucleotides using one strand of DNA as template.

DNase I-End nuclease that digests either single stranded or double stranded DNA.

So, the correct option is 'C'.