Human+Evolution+HW+CC

22.3 Classification of Humans (p.475-477)

1. How are humans classified from domain to species? Domain Eukarya-membrane boung nucleus Kingdom Animalia- multicellular Phylum Chordata-nerve chord Class Mammalia-vertebrates with hair and mammory glands Order primates-brain Family hominidae-upright stance Genus Homo-fully developed brain Homo Sapiens-humans 2. What are the characteristics of primates? developed brains, live in trees usually (lemurs, monkeys, etc) 3. What major differences exist between the chimpanzee skeleton and the human skeleton? The ape has a slightly curved spine, size difference, knee's of human can hold up more

22.4 Evolution of Hominids 4. Which fossil hominid is the oldest of the australopithecines? Lucy 5. Which hominid is the first to have culture? Explain. Homohabilis, because they were able to speak better than others were, allowing them to create a more ogranized community. 6. Which hominid was the first to migrate out of Africa? Homo Eragster 7. How might Homo habilis, living 2 MYA, have differed from the austropithecines? homo habilis have better speech 8. How might Homo erectus, living about 1.9-1.6 MYA, have differed from Homo habilis? Homo eractus has larger brains 9. What is the out-of-Africa hypothesis and what bearing does it have on the evolution of humans? Homo sapiens evolved from homo erectus in africa 10. How do Cro-Magnons, the first of the modern humans differ from the other species in the genus Homo? they hunted and had more of a society than others