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
(Cytogenetics and Crop improvement)
Annual Examination, 2017
Time 3 Hours. Full Marks 80
Answer any Five Questions. All questions carry equal marks.
1. Define crossing over. Describe the mechanism of crossing over.
2. What is translocation What do you mean by heterozygous translocation.
3. Give an account of the structure and significance of supernumerary chromosomes.
4. Write short notes on any Two of the following
Plasmid as vector Bacteriophage as vector
High iron rice DNA fingerprinting
5. Write short notes on any Two of the following
Lampbrush chromosome Polytene Chromosome
Idiogram Nucleosome
6. Write short notes on
Different types of banding patterns of chromosome in plants
Sex linkage in Drosophila
7. How Mendelian ration stands modified. Give one example.
8. Describe the different tools employed in Genetic engineering. Briefly mention their significance.
9. Write short notes on:—
Aneuploid Polyploids in crop improvement
10. Explain gene regulation in Prokaryotes.