11“Nothing in biologymakes sense exceptIn the light of evolution”-Theodosius Dobzhansky,19732The Darwinian RevolutionModern view of the living world came into focus in November 1859, Charles Darwin published On the Origin of Species by Means of Natural Selection. Argued from evidence that species were not created but had evolvedfrom ancestral species through natural selection. The theory of evolution is one of the most pervasive and explanatory themes in modern biology. The idea that organisms can change from one generation to the next, that life changes as time progresses was contrary to many past teachings by masters. NORTHAMERICASOUTHAMERICAAFRICAEUROPEAUSTRALIAPACIFICOCEANATLANTICOCEANEnglandCape ofGood HopeCape HornTierra del FuegoGalápagosIslandsDarwin in 1840HMS Beaglein portEquatorTasmaniaNewZealandAndesAbout the voyage…The Challenger Expedition4Darwin’s Voyage on the Beagle•Visited S. America (inc. Galapagos), Africa, Tazania and New Zealand•3 years 3 mo. on land, 18 mo at sea (1831-1836)•Observed marine fossils high in the Andes, an earthquake that caused coastal uplift, scores of endemic species in the Galapagos•Sent thousands of samples home for science and for profit•Kept a detailed now-famous journal
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