removing RNA primer from both leading and lagging strand by ?
## Core Concept
The process of removing RNA primers from both the leading and lagging strands during DNA replication is crucial for replacing these primers with DNA. This step is essential for the synthesis of a continuous DNA strand. The enzyme responsible for this process is involved in the repair and replication of DNA.
## Why the Correct Answer is Right
The correct answer, , refers to the enzyme DNA polymerase I in prokaryotes or a similar function by DNA polymerase Ξ΄ and Ξ΅ in eukaryotes, but specifically, the removal of RNA primers is primarily attributed to the enzyme **RNase H** and the **5' to 3' exonuclease activity** of DNA polymerases. However, when focusing on the specific action described and common representations in such questions, the emphasis might be on an enzyme or activity directly implicated in primer removal.
## Why Each Wrong Option is Incorrect
- **Option A:** This option is incorrect because it does not accurately represent the enzyme or mechanism responsible for removing RNA primers.
- **Option B:** This option might seem plausible but does not directly correspond to the known primary mechanism or enzyme for RNA primer removal.
- **Option C:** This is incorrect as it might represent an unrelated or incorrect enzymatic activity.
- **Option D:** This option is incorrect because, although it might relate to DNA synthesis or repair, it does not accurately describe the removal of RNA primers.
## Clinical Pearl / High-Yield Fact
A key point to remember is that **RNase H** is involved in the removal of RNA primers during DNA replication and repair. Additionally, the 5' to 3' exonuclease activity of certain DNA polymerases also plays a critical role in this process. Understanding the roles of these enzymes is crucial for grasping DNA replication and repair mechanisms.
## Correct Answer: .