Transcript Speciation
Human Evolution Modern species do not descend from modern species!! It is not monkey to man. Rather, we share a common ancestor We’re cousins Cabbage Our family tree De-evolution Branches can be branched even further Evolution of the genus homo A VERY gradual change Can’t tell a difference between mother and daughter Distinct difference between current population and greatgreat-great-great-great-great-great grandparents Gradual Change The intermittent games resemble the games from the same time period Call of Duty Advanced Warfare Asteroid Follow current form backwards to find beginning These are the punctuations. Fossils found that differ significantly More fossils found that provide the transitional pictures Don’t include those Speciation Populations of the same species react to environment in different ways Speciation Populations of the same species may separate Live in different environments Human Speciation Chimpanzees and Bonobos are our only living cousins. Fossil record shows many more even more closely related What differentiates us? • • • • Big brains Thinner/flatter face Greater wrist flexibility Bipedal (walk upright) First advances • Fossils show that bipedalism was first – Australopithecines walked upright but had apelike heads • Lucy discovered in Kenya – Walked upright, had small brain, fingers were ape-like, hip and knee joins were human like • Fossil record shows intermediary species that are human and ape like Lucy Appearance of Genus Homo • Bigger brains, lighter skeletons, flatter faces, and smaller teeth