Which RNA polymerase transcribes mRNA in eukaryotes?

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Multiple Choice

Which RNA polymerase transcribes mRNA in eukaryotes?

Explanation:
RNA polymerase II is the enzyme that transcribes mRNA in eukaryotes. It specializes in producing messenger RNA precursors and works with transcription factors to initiate transcription at gene promoters. Its C-terminal domain coordinates cotranscriptional processing, guiding 5' capping, intron splicing, and 3' polyadenylation, which together convert the transcript into a mature mRNA. The other polymerases have different primary roles: polymerase I makes ribosomal RNA components, polymerase III transcribes transfer RNAs and 5S rRNA, and polymerase IV is involved in plant-specific siRNA pathways. Thus, polymerase II is the correct transcriber of mRNA.

RNA polymerase II is the enzyme that transcribes mRNA in eukaryotes. It specializes in producing messenger RNA precursors and works with transcription factors to initiate transcription at gene promoters. Its C-terminal domain coordinates cotranscriptional processing, guiding 5' capping, intron splicing, and 3' polyadenylation, which together convert the transcript into a mature mRNA. The other polymerases have different primary roles: polymerase I makes ribosomal RNA components, polymerase III transcribes transfer RNAs and 5S rRNA, and polymerase IV is involved in plant-specific siRNA pathways. Thus, polymerase II is the correct transcriber of mRNA.

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