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Section 31.4

Human Evolution

QuestionAnswer
lineage an evolutionary group held together by common ancestry
molecular clock idea that the rate at which mutational changes accumulate in certain genes is constant over time and is not involved in adaptation to the environment
hominid a fossil which has an anatomy suitable for standing erect and walking on two feet
bipedalism walking erect on two feet
australopithecines within genus Australopithecus. possible direct hominid ancestors for humans.
mosaic evolution different body parts changed at different rates and therefore at different times
culture encompasses human behaviors and products
multiregional continuity hypothesis modern humans evolved separately in Asia, Africa, and Europe
out-of-africa hypothesis modern humans evolved in Africa and then migrated to asia and europe
neandertals hominid with a sturdy build that lived during the last Ice age in europe and the middle east; hunted large game and left evidence of being culturally advanced
cro-magnons first fossild designated as homo sapien
Created by: kperks
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