Lecture_31_DulaiS09_Human

Lecture_31_DulaiS09_Human - Human Evolution: Where did we...

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Unformatted text preview: Human Evolution: Where did we come from? Might there be implications? . What lines of evidence are used to reconstruct our evolutionary history? . What makes humans so different from other primates? . Where might modern humans have come from? . What are the implications of our history for our concept of race and aspects of our phenotypes?- 30 more slides What evidence is available for reconstructing human evolutionary history? What makes this a particularly difficult task ? humans are the only living representative of our genus (Homo)! What lines of evidence primarily used to reconstruct human evolutionary history? 4 lines of evidence ) physical evidence fossils, artifacts, tc. ) living primates ) diversity of human cultures traditional societies ) DNA What lines of evidence primarily used to reconstruct human evolutionary history? emurs Monkey ho are our closest relatives? Tarsiers we are primates Gibbons rangutan Chimpanzee Bonobo orilla ho are our closest relatives? Great Apes = Hominidae Chimps 98.7% DNA sequence similarity!! How do we know? 96% similarity when insertions & deletions considered! Are karyotypes of apes identical? from left: orangutan human gorilla chimpanzee No , slight differences both lineages have both been evolving since last shared common ancestor what did it look like?????? What has been happening since the chimp & human lineages diverged? chimp lineage gave rise to modern chimps & bonobos (Pan roglodytes & Pan paniscus) human lineage to humans (Homo) & several extinct genera (and herefore species too) Hominidae Genus What characteristics distinguish humans from chimpanzees & when did they evolve? Three major characteristics for which have clear physical evidence: Clear behavioral differences: 1. Bipedal locomotion 2. Big brains 3. 3. Able to expand our entire geographic range to entire world! Relatively great intelligence Communication using complex language Complex material culture - ability to use and manipulate the environment Generally complex social environment ex. division of labor Communication using complex language 1. Bipedal locomotion First evolved ~ 4 mya When did bipedalism evolve?...
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Lecture_31_DulaiS09_Human - Human Evolution: Where did we...

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