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NEETZoologyMolecular Basis of Inheritance

Match List-I with List-II regarding the enzymes involved in eukaryotic transcription and their products. List-I List-II A. RNA polymerase I I. hnRNA B. RNA polymerase II II. 28S rRNA C. RNA polymerase III III. tRNA and snRNAs Choose the correct answer from the options given below:

Options

  1. AA-I, B-II, C-III
  2. BA-II, B-III, C-I
  3. CA-III, B-I, C-II
  4. DA-II, B-I, C-III

Correct answer

D. A-II, B-I, C-III

Step-by-step solution

In eukaryotes, there are three major types of RNA polymerases in the nucleus, each with specific functions. RNA polymerase I transcribes rRNAs (28S, 18S, and 5.8S). Therefore, A matches with II. RNA polymerase II transcribes the precursor of mRNA, known as heterogeneous nuclear RNA (hnRNA). Therefore, B matches with I. RNA polymerase III is responsible for the transcription of tRNA, 5S rRNA, and snRNAs (small nuclear RNAs). Therefore, C matches with III. The correct matching sequence is A-II, B-I, C-III. Answer: A-

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