Test 2 Review 2010

Test 2 Review 2010 - Review for Test 2 Hominid Evolution...

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Review for Test 2 Hominid Evolution Monday, March 29 Test will be on paper, which we supply It will cover the material since the first test Study from your class notes; Posted Powerpoints; Online practice quizzes; Worksheets 5, 6, 7, 8; Assigned readings/coloring
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Test totals 55 points All questions are 0.5 points each Except for 6 short answer questions 37 Multiple choice 4 Identify the skull pictures 6 Identify the “firsts” 16 Matching 18 True/False 15 Definitions 5 one-point each short answers 1 two-point explanation of model/hypothesis (two are given, you choose one to answer)
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We’ve covered five big questions about models or hypotheses: 1. Theory of Evolution 2. Theory of Plate Tectonics 3. Visual Predation Theory 4. Development of bipedalism 5. Expensive Tissue Hypothesis Two have been chosen for the single two-point question, but all are on the test in one form or another. Of the two given, you can choose which one to explain.
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What is evolution? The change in allele frequency of a population over time On an individual level, variation can arise from one generation to the next through sexual reproduction : Mutation, linked genes, crossing over leading to recombination, and independent sorting/segregation
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On the level of a population, a change in the allele frequency can occur because of: Mutation, gene flow, genetic drift, or natural selection What does the Theory of Natural Selection posit? - Organisms are adapted to their environment - Population undergoes adaptive change when environment changes - Variation already exists. Those best adapted survive - Those who survive pass on their variation to their offspring
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REVIEW What theory posits that plates move? 1. Theory of Plate Tectonics What is that movement called? Continental drift
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1. As continents separate, can result in splitting of gene pool, resulting in genetic drift 2. As continents join, can result in gene flow 3. As continents move, the climate and environment change 4. Through time, the worldwide climate changed ALL of the above can contribute to evolutionary change! Why do we care?
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What theory has been presented to explain why primates developed good visual acuity, prehensile hands, nails? 2. Visual predation theory Visual Predation Theory Searching for fruit and insects on slender branches favors vision (especially forward-facing eyes) over smell, grasping hands and feet, and nails instead of claws
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Possible factors or influences: * To move about more efficiently among the scattered trees, use less calories to move * To be able to stand up for a better view over the grasses * Ability to carry objects (males could then provision females) * Stand up to cool off 3. Bipedalism Timing is tied in to the Terminal Miocene Event: cooling/drying trend resulted in African forests becoming more grassland with scattered trees: However, if earliest hominids lived in forests, need to rethink!
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4. Expensive Tissue Hypothesis Brain is one of 5 expensive tissues in the body: that is, organs that are small in size but need a lot
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This note was uploaded on 10/04/2011 for the course ANTH 101 taught by Professor Simmons during the Spring '06 term at South Carolina.

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Test 2 Review 2010 - Review for Test 2 Hominid Evolution...

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