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Lecture 2

Lecture 2.pdf

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Genevieve Dewar

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ANTA01week 2 EVOLUTION GKim 998407978OUTLINE Evolution is descent with modification History of evolution Mechanism Genetics Processes Case studiesCONCEPTS ON EVOLUTION AND HUMAN ORIGINSWHAT IS EVOLUTIONHOW DOES IT WORK Evolution1 Natural selection 2 Survival of the fittest 3 Adaptation to the environment 4 Traits already present variation 5 Sexual selection EVOLUTION works based on an entire population species not individualsSpecies group of organisms that breed together and produce viable and fertile offspringMay be quite similar in appearance deer or quite variable dogsMay all live in one part of the world polar bears or in many parts of the world right whalesShare behavioral traits in relation to social groups food preferences reproductive strategies etc depending on the region and their lifestylesDistinguish between members of own species and othersDarwin The Origin of Species in 1859 Very religiousstudied the finches pigeonsearthwormsHISTORY OF ORIGINSOrigin of the Earththerefore humans based on his interpretation of the Bible n Genesis humans were made by an extravagant technology n James Ussher 15811656 He came up with the age of the Earth rd6000yrs old today October 23 4004BC at 900amGEOLOGY CONTRIBUTES CATASTROPHISTSGeorge Cuvierif only 6000 yrs old then global and violent catastrophes to explain canyons mountains Completely convinced that the earth was 6000 yrs oldReverend Burnet 1681AD slow erosion Water wind and ice UNIFORMITARIANISM Buffon 1749AD to learn about the earth study the earthprocesses are known natural and observableHutton 1788AD slow working uniformnatural processes hundreds of thousands or yrs Lyelle 1873AD 100000 yrs the present is the key to the past
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