Final_Exam_EEMB_102_2006 - Principles of Homology and...

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1 Final Exam EEMB 102 (83 total points) Name__________________________ Multiple Choice ( 2 points each) 1. Which of the following can directly explain the absence of transitional species in the fossil record? a. Gradual evolution b. Punctuated equilibrium c. Natural selection d. A Poor fossil record e. More than one of the above f. All of the above g. None of the above 2. Which of the following does NOT describe a pre-zygotic barrier to reproduction? a. Females flies find males of another species to be poor dancers and will not mate b. Urchin eggs from one species are incompatible with sperm from another c. Mules, which are hybrids of male donkeys and female horses, are infertile d. One finch species lives on one island, another species lives on a different island e. All of the above ARE pre-zygotic barriers to reproduction 3. Geographic isolation is required for what type of speciation? a. Phenetic b. Biological c. Allopatric d. Sympatric e. Ecological f. More than one of the above 4. Which of the following is/are NOT required to be considered adaptive radiation (according to Schluter) a. Rapid speciation b. Monophyletic ancestry c. A correlation between useful traits and the environment d. All of the above ARE required 5. Which mutational event should occur most commonly? a. A->T b. T->A c. G->C d. C->A e. All of the above should be equal (assuming no selection)
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2 Short Answer 1. (5 points) Explain Gould’s argument that the Cambrian explosion shows how the evolution of life is highly contingent. 2. (5 points) In the space below, draw a phylogeny, according to these instructions: a. Use the following as OTU’s: Sponge, Jellyfish, Earthworm, Mussel, Nematode, Fly, Human, and Starfish. Your phylogeny should be consistent with the tree presented in lecture that was based on 18S rDNA data. Root the tree with Sponge as a monophyletic outgroup . b.
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This note was uploaded on 06/07/2008 for the course EEMB 102 taught by Professor Oakley during the Spring '08 term at UCSB.

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Final_Exam_EEMB_102_2006 - Principles of Homology and...

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