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NEET BIOLOGYEasy

Match the following RNA polymerases with their transcribed products:

Column I (a) RNA polymerase I (b) RNA polymerase II (c) RNA polymerase III

Column II (i) rRNAs (ii) tRNA (iii) hnRNA

A

a-i, b-iii, c-ii

B

a-i, b-ii, c-iii

C

a-ii, b-iii, c-i

D

a-iii, b-ii, c-i

Step-by-Step Solution

According to the text regarding transcription in eukaryotes, there is a division of labour among the three RNA polymerases in the nucleus:

  • RNA polymerase I transcribes rRNAs (28S, 18S, and 5.8S) .
  • RNA polymerase II transcribes the precursor of mRNA, the heterogeneous nuclear RNA (hnRNA) .
  • RNA polymerase III is responsible for transcription of tRNA, 5srRNA, and snRNAs . Therefore, the correct matching is a-(i), b-(iii), c-(ii).
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