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Cards In This Set
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5 sources of evidence for evolutionary change
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Biogeography, comparative anatomy, comparative embryology, molecular biology
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Biogeography
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Geographic distribution of species- galapagos islands had similar flaura and fauna as the shore line
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Comparative anatomy
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The comparison of body structures of different species: common decent- arm and hand vs. leg and paw vs. fin vs. wing (all homologous structures)
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Comparative embryology
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Structures that appear during developement of different organisms. fishes gills, voice box of mammals
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Molecular biology
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Related individuals have greater similarity in thier DNA and proteins than do unrelated idividuals of the same species. Closely related species also have similar DNA and proteins.
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Natural selection
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The idividuals that best meet specific environmental demands have the greatest reproductive success. favored traits are represented more and more in newer generations and vice versa.
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Artificial selection
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Selective breeding of domestic plants and animals
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Population
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A group of individuals of the same species living in the same place at the same time. smallest unit that can evolve (natural selection acts on individuals but the result is seen in populations)
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Population genetics
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"modern synthesis"
population genetics combines with natural selection. |
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Species
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A group of populations whose individuals have the potential to interbreed and produce fertile offspring
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