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  • If prokaryotes contain only one RNA polymerase then how many RNA polymerases are there in eukaryotes?Option: 1 1<div class='qna-option'

If prokaryotes contain only one RNA polymerase then how many RNA polymerases are there in eukaryotes?

Option: 1

1


Option: 2

2


Option: 3

3


Option: 4

4


Answers (1)

best_answer

 

 

As discussed in RNA Polymerase in Prokaryotes & Eukaryotes -

 

 

  • Instead of a single polymerase comprising five subunits, the eukaryotes have three polymerases.
  • The RNA polymerase I transcribes rRNAs (28S, 18S, and 5.8S).
  • The RNA polymerase II transcribes the precursor of mRNA, the heterogeneous nuclear RNA (hnRNA), that is, all protein-coding nuclear pre-mRNAs.
  • The  RNA polymerase III is responsible for transcription of tRNA, 5srRNA, and snRNAs (small nuclear RNAs).
  • Hence, the correct option is (c).
     
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vinayak

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