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

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Transcription of only snRNAs

Transcription of rRNAs (28S, 18S and 5.8S)

Transcription of tRNA, 5 srRNA and snRNA

Transcription of precursor of mRNA

answer is C.

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Detailed Solution

RNA polymerase III is an enzyme that plays a key role in the transcription of genes that code for tRNA, 5S rRNA and some other small RNAs (snRNA ) in eukaryotes.
(1) sn RNAs only would be incorrect as RNA polymerase III also plays a key role in the transcription of genes that code for tRNA, 5S rRNA.
(2) The RNA polymerase I transcribes rRNAs (28S, 18S, and 5.8S).
(4) The RNA polymerase II transcribes precursor of mRNA, the heterogeneous nuclear RNA (hnRNA).

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