M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Third Semester
Zoology
Core XII — DEVELOPMENTAL BIOLOGY
(CBCS 2016 onwards)
Time 3 Hours Maximum 75 Marks
Section A (10 x 2 20)
Answer all the questions.
1. Define induction.
2. Morphogenetic gradients.
3. Mention the different types of blastula.
4. Define oogenesis.
5. Define epiboly.
6. Cell motility.
7. Differentiation of neurons.
8. Post embryonic development.
9. Define the Gene activation.
10. Define ART.
Sub. Code
509301
RW-861
2
Sp 1
Section B x 5 25)
Answer all the questions, choosing either or
11. Write short notes on potency and commitment.
Or
Explain the cell fate and cell lineages.
12. Write a note on spermatogenesis.
Or
Explain the types of cleavage.
13. Explain the germ cell determination.
Or
Write short notes on differential cell affinity.
14. Discuss the axes and pattern formation in
drosophila.
Or
Explain the regeneration in vertebrates.
15. Discuss about the nuclear transplantation.
Or
Explain the treatogenesis.
Section C x 10 30)
Answer any three questions.
Each question carries equal marks.
16. Differentiate mutants and transgenics in analysis of
development.
17. Elucidate with illustration of sperm structure.
18. Discuss about the comparative aspects of gastrulation in
fish. chick and mammals.
19. Explain the pattern formation and development of limb
in vertebrate.
20. Give a detailed account on role of cell death in
development.
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