Model Question Paper for M.Sc. (Agri.) Qualifying Examination GPB GKVK

Department of Genetics and Plant Breeding

Model Question Paper for M.Sc. (Agri.) Qualifying Examination

Duration: 3 Hours  Maximum Marks: 100

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III. Write Short Notes on the Following (Any 10 out of 15)

(Three marks each — 3 × 10 = 30 marks)

1. Write briefly and explain with a diagram prophase I of meiosis.

2. Discuss polyploidy.

3. Define hybrid vigour.

4. Explain heterobeltiosis and inbreeding depression.

5. Manifestation of inbreeding depression.

6. Write short notes on mitotic recombination.

7. Explain the effects of mutagens on DNA replication.

8. Discuss different factors affecting chemical mutagenesis.

9. Cytoplasmic inheritance.

10. Epistasis.

11. Application of somaclonal variations in crop improvement.

12. Application of somatic hybridization in crop improvement.

13. Explain the role of apomixis in crop improvement.

14. Write a short account on composite lines and mapping of QTLs.

15. Explain the role of anther culture and haploidy in crop improvement.

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IV. Answer the Following (Any 8 out of 12)

(Five marks each — 5 × 8 = 40 marks)

1. Discuss various stability parameters and their estimation in Eberhart and Russell models.

2. Write about variability, heritability, and genetic advance with examples.

3. Explain the different models of heterosis in crop improvement.

4. Describe the molecular and cytoplasmic bases of heterosis.

5. What are the important biometrical techniques used in plant breeding?

6. Compare and contrast various biotechnological techniques used in gene cloning.

7. How is plant biotechnology applied in agriculture with suitable examples?

8. Write short notes on the successful application of tissue culture technology in agriculture with examples.

9. Describe the methods of artificial exploitation of heterosis in cross-pollinated crops.

10. Explain briefly the concepts of somaclonal variation and their role in crop improvement.

11. Describe the steps involved in the production of alien addition and alien substitution lines with suitable examples.

12. Explain the types of hybridization barriers in wide hybridization and suggest techniques to overcome these barriers.