NEETZoologyMolecular Basis of Inheritance
Read the following statements regarding transcription and translation in bacteria: (A) A single DNA-dependent RNA polymerase catalyses the transcription of all types of RNA. (B) The core RNA polymerase requires transient association with the rho ( ) factor to initiate transcription. (C) Translation can begin much before the mRNA is fully transcribed. (D) The primary transcript requires extensive splicing before it ca
Options
- A(A), (B) and (C)
- B(B) and (D)
- C(A) and (C)
- D(C) and (D)
Correct answer
C. (A) and (C)
Step-by-step solution
Statement (A) is correct because bacteria have a single DNA-dependent RNA polymerase that transcribes mRNA, tRNA, and rRNA. Statement (B) is incorrect because the core RNA polymerase associates transiently with the sigma ( ) factor for initiation, whereas the rho ( ) factor is required for termination. Statement (C) is correct because in bacteria, mRNA does not require any processing to become active. Since transcription and translation take place in the same compartment (there is no separation of cytosol and nucle