Match List I with List II
| List I | List II |
|---|---|
| (A) Initiation factor | (I) Tailing |
| (B) Introns | (II) Rho (ρ) |
| (C) Termination factor | (III) Sigma (σ) |
| (D) Adenylate residue | (IV) Splicing |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (A) - (III), (B) - (IV), (C) - (II), (D) - (I)
(A) Initiation factor — this matches (III) Sigma (σ). In bacteria the RNA polymerase joins the σ factor to start transcription.
(B) Introns — this matches (IV) Splicing. Introns are cut out of hnRNA by splicing, and the exons are joined.
(C) Termination factor — this matches (II) Rho (ρ). The polymerase joins the ρ factor to end transcription.
(D) Adenylate residue — this matches (I) Tailing. In tailing, 200–300 adenylate residues are added at the 3′ end of hnRNA.