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, 2016
Time: 3 Hours. Full Marks: 80
Answer any Five Questions. All questions carry equal marks.
1. What do you mean by inversion? Explain pericentrric and paracentric inversion.
2. Give an account of the structure and significance of B-chromosome.
3. Write short notes on any two of the following
Autopolyploid Allopolyploid
Euploids Origin of Aneuploids.
4. What are the molecular mechanism of mutation? Explain with suitable examples.
5. Write short notes on the following
Type of chromosome banding technique
ionizing and Non-ionizing radiations
6. How Mendeian ratio stands modified due to interaction of two genes? Explain with
ONE suitable example.
7. How PCR technique can be utilized to amplify DNA segment?
8. Explain any two sex-linked characters with suitable example.
9. Write short on the following
Bacteriophage as vectors in gene cloning.
Role of genetic engineering in agriculture
Or
Role of genetic engineering in Medicine.
10. Write notes on the following
RFLP
Lac Operon