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-X
(Cytogenetic and crop improvement)
Annual Examination, 2018
Time 3 Hours. Full Marks 80
Answer any Five Questions. All questions carry equal marks.
1. Describe inversion as a means of Chromosomal aberration.
2. Describe crossing over. Mention its mechanism and significance.
3. What is genetic engineering? Describe various tools employed in genetic engineering.
4. What is mutation? Describe molecular mechanism of mutation.
5. What is Polyploidy? Describe different types of polyploidy. What is role of polyploidy in crop
improvement?
6. Give an account of the structure and significance of B-Chromosome.
7. How PCR technique can be utilized to amplify DNA segment.
8. What is interaction of gene Explain interaction of gene by giving suitable example (any
one).
9. Write short notes on any Two of the following
Lac operon Bacteriophage as vector
Plasmid vector linkage
10. Write short notes on any two of the following
Back cross and test cross Translocation
Genetic engineering in Agriculture Law of Dominance