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a
ρ factor- Helps in initiation of transcription
b
Core enzyme of RNA polymerase- Elongation of transcription
c
Holoenzyme of RNA polymerase- Contains (α2ββ'ⱷ) polypeptides only
d
σ factor- Helps in termination of transcription

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detailed solution

Correct option is B

Core enzyme of RNA polymerase- Elongation of transcriptionHoloenzyme of RNA polymerase- Contains (α2ββ'â±·)σ polypeptides only Ï factor- Helps in termination of transcriptionσ factor- Helps in initiation of transcription


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