National Open University Exam Past Question BIO 307 JUNE/JULY 2013

                                                                 

                                                                   

 

                                                                 National Open University of Nigeria

                                                            14-16 Ahmadu Bello Way, Victoria Island Lagos 

                                                                         School of science and Technology

                                                                       JUNE/JULY 2013 Examination 

      ^{COURSE CODE: BIO 307}

      ^{COURSE TITTLE: EVOLUTION}

      ^{TIME ALLOWED: 2hrs}

     ^{Instructions: ANSWER QUESTION 1 AND ANY OTHER 3 QUESTIONS}  

^{1. ai. Define classification} 

    ^{aii. Distinguish between Prokaryotes and Eukaryotes} 

^{bi. List the key evolutionary innovations that can be used to trace the evolution of the plant kingdom}

^{bii. How have seeds improved the Adaptations of plant to living on land?}

^{2. ai. Define mutation?}

   ^{aii. outline the harmful mutations.}

 ^{bi. Define Adaptation} 

 ^{bii. Write short notes on allopatric speciation and peripatric speciation}

^{3. ai. Define the term Ecosystem}

  ^{aii. Ecology and evolution are considered sister disciplines of the life science .discus}

^{bi. List the various techniques that can be used to investigate polymorphism in the laboratories} 

 ^{bii. Discuss the mechanism of balancing selection}

^{4. ai. Define biological Evolution?}

   ^{aii. Described   mechanical isolation and hybrid gender} 

 ^{bi. Enumerate the cause of spontaneous mutation} 

 ^{bii. Classify mutations on the basis of their functional effects}

^{5. ai. What are the major reasons for extinction?}

    ^{aii. write short notes on genetic structure and horizontal gene transfer} 

^{bi. Define population genetics.}

^{bii. Discuss the important of linkage in population genetics.}

^{6.ai. What is genetic recombination} 

  ^{aii. Write short note on the following} 

   ^{i- The fate of mutant alleles}

  ^{ii- delaterious alleles} 

^{bi. List five probable stages involved in the origin of life} 

^{bii. Explain the following evidence of evolution} 

^{i- bio-geographical}

^{ii- bio-chemical}

^{iii- anatomical}

                                                                 

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