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Posted Date: 18 Oct 2009 Posted By: Manish Jain Member Level: Diamond
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2006 Madras University B.Sc Bio-Technology Genetics, Plant Breeding and Biostatistics Question paper
Semester VI - Paper IX - Genetics, Plant Breeding and Biostatistics
Time: Three hours
Maximum 100 marks
SECTION - A - [10 x 3 = Marks 30]
Answer any TEN questions.All questions carry equal marks.
Each answer should not exceed 50 words.Draw diagrams wherevber necessary.
1. Back cross.
2. Lethal genes.
3, Multiple alleles.
4. Phenotype.
5. Standard error.
6. Vital statistics.
7. Clones.
8. Cytoplasmic inheritance.
9. Nucleotide.
10. Level of significance.
11. Selection.
12. Heterosis.
SECTION - B [5 x 6 = Marks 30]
Answer any FIVE questions. All questions carry equal marks.
Each answer should not exceed 200 words.
13. Enumerate the Mend els laws.
14. Elucidate the sex determination in plants.
15. What is polygenetic inheritance ? Give an example.
16. What are the characteristics of good average?
17. Describe the breeding procedures for disease resistant varieties.
18. Mention various methods of sampling.
19. What are the measures of mortality to express death rates?
17. Bring out Hardy-Weinberg law of equilibrium.
18. Trace the principles of plant breeding.
19. Male sterility in Corn.
SECTION - C [4 x 10 = Marks 40]
Answer any FOUR questions.
All questions cariy equal marks.Each answer should not exceed 500words.
20. Illustrate the phenomena of Linkage and crossing over with suitable examples.
21. Write in detail about the role of ploidy in plant breeding.
22. Explain various methods adopted to get the crop improvement.
23. Give a brief account of mutations and their role in plant improvement.
24. How will you test the independence of two attributes?
25. Write an essay on improved seed production and seed testing techniques.
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