Presentation on theme: "Section 4 Primates & Human Origins"— Presentation transcript:
1 Section 4 Primates & Human Origins Chapter 43 MammalsSection 4Primates & Human Origins
2 Primate Characteristics Prehensile appendages- hands, feet, and tails can graspLarge brain- allows for complex skills- interacting socially, parental care, using hands, interpreting visual informationAcute color vision- forward facing eyes for depth perception
6 Primate Characteristics Manual dexterity- opposable thumbs, flattened nails protect finger padsSocial organization- live in social groupsCharacteristic skeletal structure- sit upright, cling to trees
8 AnthropoidsAnthropoid primates- gibbon- New World monkeys, Old World monkeys, apes, and humansAdaptations: rotating shoulder, elbow joints, opposable thumb- can touch other fingersGrasping feet
9 New World monkeys- orange Old World monkeys- red
10 AnthropoidsHumans, apes, and Old World monkeys- similar dental structuresAnthropoids have a larger brain structureGreat apes- orangutans, gorillas, chimpanzees, bonobos, and humans
11 AnthropoidsDNA sequence- humans are more closely related to chimpanzee than chimpanzee related to gorillaDNA & fossil evidence suggest that humans and chimps share a common ancestorHumans did NOT descend from chimps- evolved from common ancestor
16 Hominids Hominids- humans and extinct humanlike anthropoid species BipedalismAll other primates are quadrupedal
17 Fossil HominidsPaleontologists & anthropologists (scientists who study humans) found fossil evidence of humanlike species1974- Afar Valley region of Africa by Donald Johanson and colleagues founded a bipedal fossil of early human ancestor
23 HumansHumans- extinct and living members of this genus (Homo)
24 Homo habilis & Homo erectus 1960s- hominid skull- larger brain capacity than Lucy- Homo habilisHomo erectus- (“upright human”)- brain capacity of 2/3 modern human size- scientists think these were the first humans to travel out of Africa
25 Homo sapiens & Homo neanderthalensis Neanderthals- Europe & AsiaLived in caves & made tools out of stoneMay have interacted with Homo sapiensH. Sapiens- first humans- France (first fossil)
26 Modern Humans Mitochondrial DNA suggests humans originated from Africa Interbreeding of humans helped populate the world full of the human race
27 REVIEW!!!Identify which characteristics humans share with primates and which are unique to humans.What kind of evidence shows that chimpanzees are the closest living relatives of humans?
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