Question:
The enzyme involved in removal of RNA primer in DNA replication process is
The enzyme involved in removal of RNA primer in DNA replication process is
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DNA Pol I:
- Removes RNA primers (5'→3' exonuclease).
- DNA Pol III: Main replicative polymerase.
- Primase synthesizes RNA primers.
- Removes RNA primers (5'→3' exonuclease).
- DNA Pol III: Main replicative polymerase.
- Primase synthesizes RNA primers.
Updated On: Sep 1, 2026
- DNA polymerase
- DNA primase
- Endonuclease
- RNA polymerase
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Question:
This question tests knowledge of DNA replication mechanisms.
Step 2: Detailed Explanation:
DNA polymerase (specifically DNA polymerase I in prokaryotes) removes RNA primers.
It has 5'→3' exonuclease activity that removes the RNA primer and replaces it with DNA.
DNA primase (B): Synthesizes RNA primers.
Endonuclease (C): Cleaves DNA at specific sites.
RNA polymerase (D): Synthesizes RNA from DNA template.
Thus, DNA polymerase removes RNA primers.
Step 3: Final Answer:
Thus, DNA polymerase is involved in removal of RNA primers, which corresponds to option (A).
[0.5cm]
This question tests knowledge of DNA replication mechanisms.
Step 2: Detailed Explanation:
DNA polymerase (specifically DNA polymerase I in prokaryotes) removes RNA primers.
It has 5'→3' exonuclease activity that removes the RNA primer and replaces it with DNA.
DNA primase (B): Synthesizes RNA primers.
Endonuclease (C): Cleaves DNA at specific sites.
RNA polymerase (D): Synthesizes RNA from DNA template.
Thus, DNA polymerase removes RNA primers.
Step 3: Final Answer:
Thus, DNA polymerase is involved in removal of RNA primers, which corresponds to option (A).
[0.5cm]
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