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8 Cards in this Set
- Front
- Back
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Primates are what three groups
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Tarsiers
Lemurs Anthropoids (Apes and Hominids) |
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What distinguishes primates?
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They have opposable thumb to grasp
Large Brain short jaws Forward looking eyes Well developed parental care and social behavior is complex. |
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Hominids diverged 20 mya from
Humans are Bipedal hominids, Homo sapien is 160,000 years old. |
Old world monkeys who lack prehensive tail.
Common ancestor of apes and humans lived 6 mil ya. |
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What distinguishes Hominids?
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Upright posture
Bipedal locomotion Larger Brains Language capability Thought of symbols Use and make complex tools HAIRLESSNESS! |
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Tell me a little about:
Australopiths Homo Habilis Homo Erectus Homo Neanderthalensis Homo Sapiens Homo Floriensis |
They were the first! Some walked fully erect
Habilis is first Hominid - He used stone tools Erectus was the first to leave Africa (went to Asia) Neanderthalensis - Lived in Europe, first to bury dead in ritualistic fashion - Sapiens brought them to extinction Sapien went to Europe and then to rest of world Floriensis is little dude (Relates to Island Gigantism, dwarfism he is supposedly a little version of erectus) |
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Floriensis shows
Different Clades of Lice Shows |
Erectus could have lived much closer to the present day than previously thought, concurrently w/ humans
There are two clades of lice that diverged at same time as split of sapien and erectus, we could have acquired 2nd clade from contact w/ erectus. |
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Tell me the three modern Human Hypothesis
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Candelabra - States that modern humans evolved in parallel from homo erectus w/ no gene flow.
Multiregional says that modern humans evolve in parallel w/ some gene flow Out of Africa - Sapiens arose in Africa after other species and replace them afterwards. |
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Molecular Clock evidence supports which hypothesis?
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Out of Africa
Out of Africa = African replacement hypothesis argues every human is descended from smal group in Africa who replaced earlier species. Multiregional says that sapiens gradually evolved from several types of species throughout the world. MITOCHONDRIAL DNA tree of humans and neanderthals indicate that Neanderthals didn't contribute to mitochondrial DNA of modern humans. |
