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Evolutionary Biology 1262012 90900 AM Evolution y What is it y Evolution by natural selection o The most widely testedwidely accepted theory to explain the natural world y change in average phenotype over time how they look y change in gene frequencies across generations some become more numerous some dont and these genes tie into phenotypesAdaptation y Fit to the environmentNatural selection y Differential fitnessFitness y Survival reproductiondirectindirectSPECIES change through timenot fixed y Fossil record y Comparative anatomy y Direct observation o microevolutionALL have a common origin y Unity in diversitySome differences are ADAPTATIONS y Adaptive radiation y Convergent designArtificial selection y When u breed ex Hogs to get hairier Natural selection and therefore adaptation y Mutation creates genetic diversity
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