CUET Preparation Today
Observe the given figure and answer the question.
|
Match List - I with List - II.
|
(A)-(I), (B)-(II), (C)-(III), (D)-(IV) (A)-(II), (B)-(III), (C)-(I), (D)-(IV) (A)-(III), (B)-(I), (C)-(IV), (D)-(II) (A)-(III), (B)-(II), (C)-(IV), (D)-(I) |
(A)-(III), (B)-(I), (C)-(IV), (D)-(II) |
The correct answer is Option (3) - (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
Primary transcripts contain both the exons and the introns and are non-functional. Hence, it is subjected to a process called splicing where the introns are removed and exons are joined in a defined order. hnRNA undergoes additional processing called as capping and tailing. In capping an unusual nucleotide (methyl guanosine triphosphate) is added to the 5'-end of hnRNA. In tailing, adenylate residues (200-300) are added at 3'-end in a template independent manner. It is the fully processed hnRNA, now called mRNA, that is transported out of the nucleus for translation.
|
