Semester I Examinations 2008 / 2009
Exam Code(s) 3BS, 3MR
Exam(s) Third Undenominated Science, Third Marine Science
Module Code(s) Z0313
Module(s) Evolutionary Developmental Zoology
Paper No. 1
External Examiner(s) Prof. C. Holland
Internal Examiner(s) Prof. W. Arthur
Dr. U. Frank
*Dr. Grace McCormack
Instructions:
Answer 4 questions.
Duration
3hrs
No. of Pages 2
Department(s) Zoology
1. State the Hardy-Weinberg law. Explain how the assumptions made by this law
are often violated in nature.
2. Write an essay on Speciation.
3. At which stages in development are primary axes determined in Drosophila,
Caenorhabditis elegans and Hydractinia?
4. What are tumor suppressor genes, and what may happen if such a gene
undergoes a loss-of-function mutation?
5. The ear of a mature female mouse was exposed to intense, local UV irradiation
that caused DNA damage, and hence, mutations, to some skin cells. What
impact would you expect this treatment to have on her future offspring? Explain
why.
6. “Insect development is compartmentalized.” Discuss this statement with
reference to cell lineage studies conducted on the fruit-fly Drosophila.
