GK QUESTION#3949
Match the enzyme or protein in Column A with its role in DNA replication in Column B.
Read each row across both columns.
| Column A | Column B |
|---|---|
| i. Helicase | a. Joins the 3′ end of one DNA fragment to the 5′ end of the adjacent fragment |
| ii. RNA primase | b. Nucleotide polymerisation |
| iii. DNA polymerase | c. RNA primer synthesis |
| iv. DNA ligase | d. Opens up the DNA double helix |
Show Answer
Answer
C. i-d, ii-c, iii-b, iv-a
Show Explanation
Explanation
The correct matching is i–d, ii–c, iii–b, iv–a. Helicase opens the duplex, RNA primase makes RNA primers, DNA polymerase polymerizes nucleotides and DNA ligase seals adjacent DNA fragments.