GPB 604 Cellular and Chromosomal Manipulations in Crop Improvement (Question Paper)

 

UNIVERSITY OF AGRICULTURAL SCIENCES, RAICHUR
College of Agriculture, Raichur
Department of Genetics and Plant Breeding

Cellular and Chromosomal Manipulations in Crop Improvement
GPB 604 (2+1)
Final Examination 2019-20

Name: ..............................................................................................................................
ID No.: ...............................................................................................................................
Marks: 35

Answer any 7 questions.

1. What is chromosome banding? Mention its utility. Write a note on the following banding techniques. (5.0)
   a. Q banding  b. C banding  c. R banding  d. G banding

2. Explain FISH and GISH techniques and discuss their applications. (5.0)

3. What are the strategies to identify CMS-associated mitochondrial loci and mention the mechanism of action of restorer loci? (5.0)

4. Write about:
   a. Relation between intron length and GC content
   b. Relation between exon length and GC content (5.0)

5. What are the problems associated with distant hybridization? How can they be overcome? (5.0)

6. Describe the role of polyploidy in crop improvement. (5.0)

7. Discuss the genomic consequences of polyploidy. (5.0)

8. Compare the genome architecture of nuclear and organelle genomes and discuss the organization of the plant genome in chromosomes. (5.0)

9. Compare haploids, monoploids, and polyploids, and discuss the use of cytogenetic stocks in crop improvement. (5.0)