M.Sc. DEGREE EXAMINATION, APRIL 2018
Second Semester
Botany
GENETICS AND EVOLUTION
(CBCS 2017 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 X 2 20)
Answer all questions.
Define the following:
1. Law of segregation
2. Pseudoalleles
3. Neurospora crassa
4. Somatic cell hybridization
5. Karyotypes
6. Germinal mutation
7. Lamarckism
8. Natural selection
9. Monophyletic origin
10. Coevolution
Sub. Code
7MBO2C2
AFS-0601
2
ws2
Part B X 5 25)
Answer all questions, choosing either or
11. Give an account of multiple alleles.
Or
How will you account for sex influenced characters?
12. Describe the construction of linkage maps.
Or
How will you account for polygenic inheritance?
13. Explain the pedigree analysis.
Or
Give an account of structural aberrations of the
chromosome.
14. Explain the evolution of organic monomers.
Or
Describe the concept of Oparin.
15. Examine the molecular tools used in phylogeny.
Or
Give an account of gene duplication.
AFS-0601
3
ws2
Part C X 10 30)
Answer any three questions.
16. Explain the phenomenon of incomplete dominance.
17. Discuss the phenomenon of extrachromosomal
inheritance with any one example.
18. Examine the types and causes of mutation.
19. Write an essay on the origin of eukaryotic cells.
20. Critically evaluate the facets of population genetics.
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