GPB-505 Mutation Breeding (Question Paper )

 

 

(a) Definition/very short answers

1. Tautomerization

(b) Reasoning and short answer questions

1. There will be no faithful replication of DNA due to intercalation

(c) Brief notes/short notes

1. What is deamination? What do cytosine, adenine and guanine yield due to deamination?
2. How does mutagenesis supplement the existing germplasm? What are the limitations of mutations?

(d) Long answer questions

1. Write on the different objects used for irradiation, along with their merits and demerits
2. Discuss the various effects of alkylating agents on DNA
3. Discuss how a mutant in VPP can be isolated?
4. What are the various DNA repair mechanisms? Explain any one method