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NEET2021ZoologyMolecular Basis of InheritanceActual

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

Options

  1. ATranscribes rRNAs (28S, 18S and 5.8S)
  2. BTranscribes tRNA, 5S rRNA and snRNA
  3. CTranscribes precursor of mRNA
  4. DTranscribes only snRNAs

Correct answer

B. Transcribes tRNA, 5S rRNA and snRNA

Step-by-step solution

The RNA polymerase I transcribe rRNAs ( 28 S ,   18 S , and 5 . 8 S ), whereas the RNA polymerase III is responsible for transcription of tRNA, 5 S rRNA, and snRNAs (small nuclear RNAs). The RNA polymerase II transcribes a precursor of mRNA, the heterogeneous nuclear RNA (hnRNA).

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