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Zool 221: Animal Genetics And Evolution Question Paper

Zool 221: Animal Genetics And Evolution

Course:Bachelor Of Education Science

Institution: Kabarak University question papers

Exam Year:2008

KABARAK UNIVERSITY EXAMINATIONS
2008/2009 ACADEMIC YEAR
FOR THE DEGREE OF BACHELOR OF EDUCATION
SCIENCE
COURSE CODE: ZOOL 221:
COURSE TITLE: ANIMAL GENETICS AND
EVOLUTION
STREAM: SESSION IV
DAY: FRIDAY
TIME: 9.00-11.00 A.M.
DATE: 28/11/2008
INSTRUCTIONS:
Answer ALL questions in SECTION A and ANY TWO from SECTION B

Section A (40marks)
Q1. Differentiate the following terms (8marks)
a) Homologous and analogous structures
b) Phenotype and genotype
c) Dominant and recessive
d) Gene and chromosome
Q2. The following is the sequence of bases in one of the two strands of part of a DNA
molecule: CAGGTACCTG. Using this part of DNA, Illustrate and describe the
steps taken in the assembly of a protein. (8marks)
Q3. Discuss the role of variations in evolution (8marks)
Q4. Briefly describe the process of genetic engineering (8marks)
Q5. In poultry the genes for rose-comb (R) and pea-comb (P), if present together
produce a walnut-comb. The recessive alleles of both when present together in
homozygous condition produce a single-comb. What are the possible results
obtained in the F2 generation when pure breeding rose-comb fowl is crossed with
a pure breed pea-combed fowl? What general principle is being demonstrated
here? (8marks)
Section B (30marks)
Q6. Discuss the phenomenon of adaptive radiation with reference to the Galapagos
island finches (15marks)
Q7. Discuss the isolating mechanisms that lead to the formation of a new species
(15marks)
Q8. Describe the changes that have taken place in the evolution of man (15marks)

Zool 221: Animal Genetics And Evolution Question Paper

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