What is the role of RNA polymerase III in the process of transcription in Eukaryotes?

What is the role of RNA polymerase III in the process of transcription in Eukaryotes?
  1. Transcription of only snRNAs
  2. Transcription of rRNAs  (28S, 18S and 5.8S)
  3. Transcription of tRNA, 5 srRNA and snRNA
  4. Transcription of precursor of mRNA

Solution

Transcription in eukaryotes are complex process and involves at least three different DNA-dependent RNA polymerases:

  • The RNA polymerase I transcribes rRNAs of 28S, 18S, and 5.8S types,
  • The RNA polymerase II transcribes precursor of mRNA, the heterogeneous nuclear RNA (hnRNA).
  • RNA polymerase III is responsible for transcription of tRNA, 5srRNA, and snRNAs (small nuclear RNAs)

    • Asked in: NEET 2023 (All India)

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