Question: 128. Identify the correct statement.
(1) In capping, methyl guanosine triphosphate is added to the 3^{\prime} end of hnRNA .
(2) RNA polymerase binds with Rho factor to terminate the process of transcription in bacteria.
(3) The coding strand in a transcription unit is copied to an mRNA.
(4) Split gene arrangement is characteristic of prokaryotes.
Answer: Option (2)
Explanation:
In bacteria, one mode of transcription termination is Rho-dependent termination.
In this process, the Rho factor binds to the nascent RNA and interacts with RNA polymerase,
leading to termination of transcription.
Statement (1) is incorrect because capping involves addition of methyl guanosine triphosphate to the
5^{\prime} end of hnRNA, not the 3^{\prime} end.
Statement (3) is incorrect because the template strand, not the coding strand, is copied to form mRNA.
Statement (4) is incorrect because split gene arrangement with introns and exons is characteristic of eukaryotes, not prokaryotes.
Therefore, the correct statement is option (2).