NEET Botany Molecular Basis of Inheritance Questions Solved

BOARD

(a) What are the transcriptional products of RNA polymerase III?

(b) Differentiate between 'Capping' and 'Tailing'.

(c) Expand hnRNA.                                                              3 mark

(a) RNA polymerase III is responsible for transcription of tRNA, 5srRNA and snRNAs (small nuclear RNAs).

(b) Capping. In capping an unusual nucleotide (methyl guanosine triphosphate) is added to the 5-end of hnRNA.

Tailing. In tailing adenylate residues (200-300) are added at 3'-end of hnRNA.

(c) hnRNA - Heterogenous nuclear RNA.                                              3 mark

Difficulty Level:

  • 88%
  • 13%
  • 0%
  • 0%
Crack NEET with Online Course - Free Trial (Offer Valid Till August 23, 2019)