IAS Zoology Examination-2007-Mains Paper- II

SECTION-A

1. Different between any three of the following: - 20x3=60

(a) Coincidence and interference

(b) Mitotic and Meiotic Prophase

(c) Substantive and polymorphic variation

(d) Genera and Species

2. Describe transcription in pro- and eukaryotes. 60

3. Write explanatory notes on the following: - 30x2=60

a). Mobile Genetic Segment

b). Tryptophan Opera

4. Discuss Hardy-Weinberg Law and mention its utility. 60

SECTION-B

5. Explain the importance of any three of the following: - 20x3=60

(a). Structure and function of cyclic AMP

(b). Mechanism of Hormone action

(c). Regeneration

(d). Teratogenesis

6. Discuss active and passive immunity. Mention autoimmune disorders. 60

7. Describe programmed cell death. 60

8. Discuss the role of liver and pancreas in digestion? 60