Home
Class 12
BIOLOGY
Explain the post transcriptional modifi...

Explain the post transcriptional modifications the hn-RNA undergoes in eukaryotic cell.

Text Solution

Verified by Experts

hn-RNA is designated as heterogenous nuclear RNA. The precursor of mRNA, i.e., hn-RNA, contains both introsn and exons. Introns are removed and exons are joined by a process called splicing. The remaining mRNA is processed in two ways :
(i) Capping : An usual nucleotide (7-methyl guanasine) is added to 5' end of the transcript.
(ii) Taiting : Adenylate residues (200-300) are added at 3' end in a template independent manner. When hn-RNA is full processed, it is known as mRNA, which is transported out of the nucleous.
Promotional Banner

Similar Questions

Explore conceptually related problems

Explain the process of transcription.

Which of the following events take place during post - transcriptional modification in eukaryotes ?

Give an account of post transcriptional modifications of a eukaryotic mRNA.

Describe post transcriptional processing of RNA in eukaryotes.

Explain the process to transcription in prokaryotes .How is the process different in eukaryotes ?

(a) Describe the structure and function of a t-RNA molecules . Why is it referred to as an adapter molecules ? (b) Explain the process of splicing of hn - RNA in a eukaryotic cell.

What are the transcriptional products of RNA polymerase III?

Prokaryotic and Eukaryotic Cell

Assertion : Eukaryotic mRNA requires post transcription processing for formation of functional mRNA. Reason : Eukaryotic transcripts possess extra non-functional segments called introns.

Explain the mechanism of transcription in a prokaryotic cell.