NEETZoologyMolecular Basis of Inheritance
Select the incorrect statement for the given figure.
Options
- AThe RNA polymerase III is responsible for transcription of tRNA, 5srRNA, and snRNAs (small nuclear RNAs).
- BIn tailing, adenylate residues (200-300) are added at 3'-end in a template independent manner.
- CThe fully processed hnRNA, now called mRNA, remains inside the nucleus for translation.
- DThe presence of introns is reminiscent of antiquity, and the process of splicing represents the dominance of t
Correct answer
C. The fully processed hnRNA, now called mRNA, remains inside the nucleus for translation.
Step-by-step solution
In eukaryotes, there are two additional complexities – There are at least three RNA polymerases in the nucleus (in addition to the RNA polymerase found in the organelles). There is a clear cut division of labour. The RNA polymerase I transcribes rRNAs (28S, 18S, and 5.8S), whereas the RNA polymerase III is responsible for transcription of tRNA, 5srRNA, and snRNAs (small nuclear RNAs). The RNA polymerase II transcribes precursor of mRNA, the heterogeneous nuclear RNA (hnRNA). In tailing, adenylate residues (200-300)