Final Answer:
DNA polymerase III removes RNA primer and replaces it with DNA in an action that resembles nick translation . Therefore, the correct answer is c) III, RNA primer, DNA, nick translation.
Step-by-step explanation:
DNA polymerase III is a key enzyme in DNA replication, responsible for synthesizing the new DNA strand. During replication, RNA primers are initially laid down by primase to provide a starting point for DNA synthesis. Subsequently, DNA polymerase III removes these RNA primers and replaces them with DNA. This process is termed nick translation, where the enzyme simultaneously removes the RNA primer and synthesizes DNA in its place.
In the context of the given options:
- Option (c) correctly identifies DNA polymerase III, the removal of RNA primers, and the replacement with DNA.
- DNA polymerase I, mentioned in option (b), is primarily involved in removing RNA primers in the final steps of DNA replication through its 5' to 3' exonuclease activity. However, it does not perform nick translation.
- Options (a) and (d) are incorrect as they incorrectly associate DNA polymerase III with actions not characteristic of its role in DNA replication.
In summary, the final answer, option (c), aligns with the known functions of DNA polymerase III in removing RNA primers and replacing them with DNA through the process of nick translation during DNA replication.
Therefore, the correct answer is c) III, RNA primer, DNA, nick translation.