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, 2017
Time 3 Hours. Full Marks 80
Answer any Five Questions. All questions carry equal marks.
1. How did Hershey and chase using Bacteriophage differentiate between DNA and protein in
their experiment
2. What are different types of RNA in Prokaryotes and Eukaryotes.
3. How Meselson and Stahl prove that replication of DNA is semi-conservative
4. Write short notes on
Significance of DNA repair
Wobble hypothesis
5. What are the general properties of the genetic code
6. Describe briefly steps in initiation of protein synthesis in prokaryotes.
7. Write short notes on
Initiation factor in eukaryotes
Splicing (processing of Hn RNA)
8. Write short notes on
Exon
Activation of amino acids during protein synthesis
9. Explain operon concept of gene regulation in prokaryotes.
10. Differentiate between polycistronic and monocistronic genes.