M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
First Semester
Botany
CELL BIOLOGY AND GENETICS
(CBCS 2016 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. Diffusion.
2. Cytoskeleton.
3. Synapse.
4. Amitosis.
5. Mutation.
6. Gene.
7. Chromosome map.
8. Recombination.
9. Transposable elements.
10. Operon.
Sub. Code
525104
RW-868
2
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Part B x 5 25)
Answer all questions either or
11. Describe the fluid mosaic model of cell membrane.
Or
Write a note on sorting. in intercelluer transport
mechanism.
12. Describe chromosomal aberration.
Or
Give the role of polyploids in evolution.
13. Explain the role of mutation in evolution.
Or
Write a note on co-dominance.
14. Explain linkage and crossing over in genes.
Or
Give an account on gene mapping.
15. Comment briefly on modern concepts of gene.
Or
DNA is a genetic material-Justify.
Part C x 10 30)
Answer any three questions.
16. Explain in detail on the structural organization and
functions of chloroplast in plant cell.
17. Write an elaborate account on the role of karyotyping in
taxonomy of plants.
RW-868
3
Ws7
18. Write in detail on the Mendelian laws of genetics.
19. Give an elaborate account on the Sex determination in
plants.
20. What is the role of Lac operon in gene regulation?
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