ZOO.EXAM.3 - ZOOLOGY 1114 EXAM 3 REVIEW 1 evolution...

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ZOOLOGY 1114 EXAM 3 REVIEW 1 evolution: biological definition changes in the allele frequency over time charles darwin voyage of the beagle/ "origin of species"/ poulations change over generations georges cuvier founded palientology(the study of fossils)/ catastrophism/ superposition charles lyell "principles of geology"/ gradualism/ earth is older than 6000 years jean baptiste lamarck the individual can evolve within their lifetime natural selection a process/mechanism for the change in a population;;;; the differential survival and reproduction of organisms whose genetic traits better adapt them to a particular environment population localized group of individuals that belong to the same species; can be potentially inherited or share a common gene pool gene pool total aggregiate of genes in a population at any one tim; all alleles at all gene loci in all individuals of a population gene flow allele movements between populations HARDY WEINBERG THEOREM measuring change using a null hypothesis/predicts there is no evolutionary change H.W. formulas p+q=1 /// p^2+2pq+p^2 H.W. five assumptions no selection large population no immigration/emmigration of individuals no net change in mutations random mating fuels of evolution variation/selection/time mechanisms of evolution natural selection genetic drift migration mutation non-random mating GENETIC DRIFT change in gene pool due to chance bottleneck effect natural disaster kills individuals nonselectively (cheetahs) founder effect colonozation of neew location by few individuals MIGRATION immigration and emmigration aduce evolutionary change MUTATION change in DNA to create a new allele (sickleback fish) NON-RANDOM MATING selection of mates other than by chance (birds) sexual selection struggle between individuals of one sex that increases the change of mating with the other sex (birds) sexual dimorphism males and females look different (lions, peacocks) reproductive isolation prezygotic and postzygotic PREZYYGOTIC ecological individuals live in different environments temporal individuals live or mate during different times of the day or year behavioral mating behaviors differ/ result in sexual selection
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This note was uploaded on 04/25/2008 for the course ZOO 1114 taught by Professor Melodybrooks during the Spring '08 term at The University of Oklahoma.

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ZOO.EXAM.3 - ZOOLOGY 1114 EXAM 3 REVIEW 1 evolution...

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