Download PTU B.Sc-Agriculture 2020 March 7th Sem 77097 Genetics Of Crop Plants Question Paper

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B.Sc. (Agriculture) (Sem.-7)

GENETICS OF CROP PLANTS
Subject Code : BSAGPGB-701
M.Code : 77097

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Time : 3 Hrs. Max. Marks : 60

INSTRUCTIONS TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

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SECTION-A

1. Write briefly :
   1. Constitutive Genes
   2. Alternative Splicing
   3. Somatic and Germinal Variations
   4. Transposons

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   5. Homologous Recombination
   6. Gene Pool
   7. Recombination frequency
   8. Promoters and Enhancers
   9. Nucleotide and Nucleoside

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   10. Linkage

SECTION-B

2. a) Highlight major differences between genome organizations in prokaryotes and Eukaryotes.
   b) Discuss briefly about genetic recombination in eukaryotes.

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3. a) Define Mutations, its characteristics and implications.
   b) What do you understand by Silent, mis-sense and non-sense mutations?
4. a) Discuss Hardy-Weinberg law.
   b) Define genetic Variability and Genetic drift.
5. Differentiate between the following :
   1. Backcross and Testcross

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   2. Qualitative and Quantitative traits with example
   3. Genotype and Phenotype
6. Write short notes on :
   1. Histone modifications
   2. Post transcriptional gene regulation

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SECTION-C

7. Discuss in details the mechanism of DNA replication.
8. Discuss in details about cytoplasmic inheritance mode. How does it differ from nuclear inheritance?
9. a) What do you understand by genomic and cDNA libraries?
   

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   b) Enlist various methods of genetic transformation and describe any one method in detail.

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.