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Szl 301: Evolutionary Biology Question Paper

Szl 301: Evolutionary Biology

Course:Bachelor Of Science

Institution: University Of Nairobi question papers

Exam Year:2014

UNIVERSITY OF NAIROBI
FIRST SEMESTER EXAMINATIONS 2014/2015
4TH YEAR EXAMINATIONS FOR THE DEGREE OF BACHELOR OF SCIENCE
SZL 301: EVOLUTIONARY BIOLOGY
DATE: DECEMBER 11, 2014 TIME: 9:00 A.M. – 11.00 A.M.
Answer ALL questions from SECTION A and TWO questions selected from SECTION B. Illustrate your answers with labelled diagrams where appropriate.
SECTION A: SHORT ANSWER QUESTIONS (50 MINUTES 3 MARKS EACH)
1. Name the structures in human formed from their embryonic visceral archers evolutionarily derived from the branchial arches I-VI which also support the jaws and gills in an adult shark thus denoting common ancestry for the two organisms.
2. List the elements upon which the presence of life on the early earth is attributed.
3. Describe the experiments by the Italian Red in 1680 that discredited the “spontaneous generation theory” on the Origin of Life from non-living materials.
4. List the sequence of the process in the transition from non-living to the living that would have involved the replication of nucleic acid, such as DNA, using the necessary enzymes.
5. Briefly discuss the role of “adaptive radiation” in promoting evolution.
6. Describe “genetic drift” as an evolutionary agent.
7. Using examples, explain the significance of distinguishing between homologous and analogous characterized when examining animals for morphological evidence of evolution.
8. Describe the stabilizing natural selection type.
9.
a. Define a “fossil”
b. Outline any one method used in dating fossils
10. A. Define the Hardy-Weinberg Equilibrium.
B. State its significance to the evolutionary process.

SECTION B: ANSWER TWO QUESTION (20 marks each)
11. Give an account of animal evolution during the Permian period of the paleaozoic Era.
12. Discuss the role of isolation and population structure as factors that contribute to the evolutionary process.
13. The evolution of the Homo erectus and the early man, (Homo neanderthalensis) has shaped the biology of modern human species. Discuss this statement.
14. Write an essay on human fossils.

Szl 301: Evolutionary Biology Question Paper

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