M.Sc. DEGREE EXAMINATION, APRIL 2016
Second Semester
Zoology
EVOLUTION
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Section A (10 2 20)
Answer all the questions.
All questions carry equal marks.
1. Gene duplication.
2. Neutral evolution.
3. Origin of life.
4. Orthogenesis.
5. Isolation.
6. Parapatric speciation.
7. Co-speciation.
8. Mass extension.
9. Genetic drift.
10. Fossilisation.
Sub. Code
509204
RW-10838
2
Sp 6
Section B 5 25)
Answer all the questions, choosing either or
All questions carry equal marks.
11. Write about gene divergence.
Or
Discuss about the origin of new genes.
12. Describe the evolution of horse.
Or
Write short notes on the following Macro
evolution; Punctuated equilibria.
13. What is adaptive radiation? Explain this
phenomenon by citing example of Mesozoic reptiles.
Or
Give an account on genetic variation in population.
14. Describe the differences between the conventional
speciation and quantum speciation.
Or
Discuss about the origin of speciation.
15. What are fossils? Comment on their significance.
Or
Describe the geological time scale.
RW-10838
3
Sp 6
Section C 10 30)
Answer any three questions.
All questions carry equal marks.
16. Give an account on molecular tools in phylogeny,
classification and identification.
17. Discuss about the phylogenetic tree of animals.
18. Write an essay on theory of natural selection.
19. Write an essay on the causes and mode of speciation.
20. Give an account on fossils and fossilisation.