Question

Explain how does the hnRNA become mRNA.

Answer 1

The primary transcript (hn RNA) contain both exons and introns and required to be processed before translationally active (mRNA). The introns are removed and exons arejoined in a defined order. ... The processed hnRNA is now called mRNAand transported out of the nucleus for translation.



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Answer 2

Answer:

The hnRNA undergoes the following processes to form mRNA:

(i) Capping: Addition of methyl guanosine triphosphate at 5'-end.

(ii) Tailing: Addition of 200-300 adenylate residues at 3'-end.

(iii) Splicing: Removal of introns and joining of exons.

Explanation:

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