Question

Which of the following is true for eukaryotic transcription?

• A. In capping, nucleotide methyl cytosine triphosphate is added to 5’ end of hnRNA
• B. RNA splicing is the removal of exons and joining of introns
• C. 5S rRNA is transcribed by RNA polymerase I
• D. Tailing at 3’ end of RNA is a template-independent process

Answer 1

The correct option is D Tailing at 3’ end of RNA is a template-independent process

In capping, a nucleotide of methyl guanosine triphosphate is added to the 5’ end of nascent RNA, not cytosine.

RNA splicing is the removal of introns (non-coding sequences) and the joining of exons (coding sequences).

5S rRNA is transcribed with the help of RNA polymerase III and not RNA polymerase I.

The polyadenylation at the 3’ end i.e addition of 200-250 adenosines residue to the 3’end of an RNA is done by poly A polymerase in a template-independent manner.