GPB (608) 2+0 Crop Evolution (Question Paper)

 

GPB 608 Crop Evolution 2+0 (Optional Course) Max Marks: 40

I. Define/write about the following:

1. Genetic Resource  

2. Nonsense Mutation  

3. Species  

4. Introgression  

5. Carbon dating  

6. Evolution  

7. Super domestication  

8. Syndrome  

9. Intra specific hybridization  

10. Gene silencing  

#### **II. Answer the following questions:**  

**I.** What is GPs. How it is different from GP?  

**II.** List the Vavilovian Centres of Origin.  

**III.** How one differentiates Centres of Diversity with Centres of origin.  

**IV.** What is Pounder effect? What are the ways by which new forms evolve in nature?  

**V.** What are the changes expected in domestication? Discuss.  

**VI.** Discuss the positive and the negative effects of domestication taking eat as an example.  

**V.** What is unconscious selection? Discuss its role in evolution of new forms.  

**V.** How genes get transferred in nature. List the techniques which are used to increase the gene flow in crop plants.  

**V.** What are super weeds? How they arise naturally or artificially. Will they affect environment. Discuss.  

**II.** Discuss the evolution of *wheat*.  

Answer the following questions: (any two)  

**IV.** What are the evidences available to believe evolution of Maize from Teosinte?  

**V.** Discuss the process of evolution of *Brassica group*. What evidences can you offer to believe the process?  

**V.** What are the techniques by which transgenes integration is confirmed? How a transgene is fixed in the population.