ARS Mains Examination Previous Year Question Paper GPB - 2014 December

Part-B

1. What are components of genetic variation? How it will be utilized in plant breeding?

2. What are NC designs? Compare its various designs?

3. Differentiate prokaryote and eukaryotic chromosomes?

4. Plant height for Parent inbred (P1) = 45 inches; Parent inbred (P2) = 25 inches. The F1 has plant height of 40 inches. Calculate heterosis over mid-parent? What is the average height of F2 population?

5. Two plants with white color flowers which are derived from true breeding lines are crossed. All the F1’s have red flowers. F2 of it had 177 red and 142 white flowers. Interpret this inheritance and explain its biochemical path way?

6. What is apomixis? How it will be utilized in plant breeding?

7. Pathogenic races are developing resistance to Bt now a days. Suggest breeding strategies for managing the resistance?

8. What are most widely used DNA markers? Write the reasons for their wide using?

9. In a population different desirable polygenes are distributed in different plants. Suggest breeding strategies to bring all the polygenes into one?

10. Differentiate allopatric and sympatric speciation?

11. Differentiate in vitro and in vivo conservations?

12. How allotetraploid species are produced explain with one example?

13. What is GISH? Why it is referred to as chromosome painting?

14. Explain silent polymorphism? Why it is producing?

15. Explain the uses of correlation and regression studies in plant breeding?

16. What is augmented design? What are its requirements?

17. Describe SSD? What are its applications in plant breeding?

18. What are triple zero varieties in Brassica? How they are produced?

Part-C

1. Differentiate foreground and background selection. How you reduce the number of generations in transferring a recessive trait from donor in marker assisted backcrossing?

2. Compare vertical resistance and horizontal resistance. Suggest the way to manipulation of HR and VR in plant breeding?

3. What do you understood in concept of gene changed from mendalian period to present day concept?

4. Write improvement/achievements of plant breeding by citing important milestones?

5. What is multivariate analysis? How it utilized in plant breeding?

6. How recurrent selection differs from remaining breeding methods. How it utilized in MAS?