Question

DNA polymerase has multiple mechanisms for editing and error correction, whereas the capacity for error correction in RNA polymerases seems to be quite limited. However, like a DNA mutation, an RNA polymerase error in transcription can cause production of a mutated protein. The limited error correction of RNA polymerase seems to be inconsistent with the potentially serious consequence of producing a protein with an altered amino acid sequence. Select reasons that explain why error correction is not as necessary in RNA polymerases as it is in DNA polymerases.

At least one of the reasons you have selected does not explain why RNA polymerases do not require rigorous error correction.
Transcription can produce many mRNA transcripts that then can be translated into many proteins.
If only one of these mRNAs contains an error, not all the copies of that particular protein will contain an error. Additionally, mRNAs and proteins have a finite lifetime and can be degraded while DNA persists from generation to generation. and translation.

Answer 1

DNA polymerases are involved in the production of new DNA molecules while RNA polymerases are involved the transcription of DNA to mRNA.

Error correction is not necessary in RNA polymerase as compared to DNA polymerase because

1. The production of mRNA from DNA is for a period of time, that is, it is finite and when it is converted to proteins, it can be degraded. But the DNA replication is from generation to generation as it is inherited

2. The process of transcription is so fast. Thus, just few number of transcripts will have errors compared to the number produced.