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Biol 225: Evolutionary Biology Question Paper

Biol 225: Evolutionary Biology

Course:Education

Institution: Kenya Methodist University question papers

Exam Year:2013

KENYA METHODIST UNIVERSITY
END OF 1ST TRIMESTER 2013 (SCHOOL BASED) EXAMINATION
FACULTY : EDUCATION AND SOCIAL SCIENCES
DEPARTMENT : EDUCATION
UNIT CODE : BIOL 225
UNIT TITLE : EVOLUTIONARY BIOLOGY
TIME : 2 Hours

SECTION A: ANSWER ALL QUESTION
Questions One
Describe "Creationism" theory about the origin of life.
(3 Marks)
State THREE conclusions reached by Georges Cuvier in his theory of catastophism as a consequence of his anatomical and geological work.
(3 Marks)
Question Two
In brief explain why Ribulose biphosphate carboxylase is the most abundant protein on the planet earth.
(3 Marks)

Mention any THREE trends that characterize organic evolution.

(3 Marks)
Question Three
Define the following terms. (6 Marks)
Evolution
Macroevolutrons
Natural selection
Artificial selection
Inbreeding
Endemic species

Question Four
Explain the difference between the theory of gradualism and punctuated equilibrium theory. (6 Marks)
Question Five
Resistance to chemicals or drugs by some strains of microbes is due to natural selection.
Is the statement true or false?
(1 Marks)
Explain your answer in 5 (a) (i) above.
(2 Marks)

State any THREE major differences between Lamarks’s theory and Darwin’s theory.
(3 Marks)
SECTION B (40 MARKS)
Answer any TWO Questions.
Question Six
Define microevolution and explain FIVE basic causes of microevolution.
You have sampled a population in which you know, that the percentage of the homozygous recessive genotype (aa) is 36%. Using that 36%, calculate the following:
The frequency of the "aa" genotype.
(2 Marks)
The frequency if the "aa" allele.
(2 Marks)
The frequency of the "A" allele.
(2 Marks)
The frequencies of the genotypes "AA" and "Aa".
(2 Marks)
Question Seven
State the Hardy-weinberg law and explain the FIVE conditions must be met in order for equilibrium to remain in effect i.e no evolution is occurring.
(12 Marks)

In reference to the Darwin’s Galapogos Finches, explain how adaptive radiation results into speciation.
(8 Marks)
Question Eight
Explain the major factors on which Charles Darwin’s theory of natural selection is based.
(10 Marks)
Biogeographically, Australia continent has its own peculiar fauan. State specific examples and explain reasons for this uniqueness.
(10 Marks)

Biol 225: Evolutionary Biology Question Paper

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