N A L A N D A O P E N U N I V E R S I T Y
M.Sc. Botany, Part-II
PAPER-XI
(Molecular Biology)
Annual Examination, 2018
Time 3 Hours. Full Marks 80
Answer any Five Questions. All questions carry equal marks.
1. Explain in step-wise manner that Replication of DNA is semiconservative in Prokaryotes.
Briefly describe mechanism involved.
2. Describe the process of translation in Prokaryotes. Mention enzymes involved.
3. Describe different kinds of RNA and also mention their specific role.
4. What are the properties of Genetic code. Explain wobble hypothesis.
5. How DNA thread gets folded to form Nucleosome What is significance of Nucleosome in
packaging of DNA.
6. Write short notes on any Four of the following
Nitrogenous base Reverse transcriptase
Spliceosome DNA polymerase and its role
RNA Polymerase its role Exons and Introns
7. Write short notes on any Two of the following
Linker DNA Northern blotting
Southern blotting Western blotting
8. What are transposons Why are they important in recombinant DNA research
9. Describe the concept of Prototrophs and auxotrophs. Why are they important is genetic research.
10. Explain one gene one enzyme hypothesis. How it stands modified