two theories that scientists have come up with over the years to explain the theory of evolution were the multiregional theory and out of Africa theory. The multiregional theory expresses the idea that Homo erectus developed in different parts of the world. The out of Africa theory expresses that Homo erectus developed in Africa nearly two million-years-ago and as the temperatures changed‚ they moved throughout the world and developed differently. “The multiregional view posits that genes from all
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Unit 3: Paleoanthropology and the Fossil Record Paleoanthropology * The study of human evolution‚ the hominid fossils‚ and their relations to each other and modern humans. The study of the fossil record‚ the study of the relationships among the fossils to themselves and to us. * There is nothing outside Africa that is even in the running to be a potential human ancestor * The most fossils are found in East Africa in the Rift valley‚ several in South Africa‚ and a few in Central Africa
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The Laetoli footprints are evidence that A) Lucy walked on all fours. B) Homo erectus hunted small animals. C) A. afarensis walked upright. D) Homo habilis traveled with dogs. Points Earned: 1.0/1.0 2. The oldest fossils of modern humans‚ archaic humans‚ and early hominins have all been found in A) the Americas B) Asia C) Africa D) All continents except Australia Points Earned: 1.0/1.0 3. The key feature of genus Homo compared to previous hominins is A) a meatheavy diet B) a protruding chin
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may use tools? Chimpanzees and other apes. 7. Why did “homo ergaster” not advance in human terms? Their brain didn’t work like ours. He had a medium size brain. 8. According to findings of “expressions of a modern mind”‚ when do scientists believe that modern humans – Homo sapiens – first appear? Scientists argue that the earliest species may have existed 200‚000 years ago. 9. What advantages‚ if any‚ do modern humans appear to have over Homo erectus and
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evolution is the evolutionary process leading up to the appearance of modern humans. While it began with the last common ancestor of all life‚ the topic usually covers only the evolutionary history of primates‚ in particular the genus Homo‚ and the emergence of Homo sapiens as a distinct species of hominids (or "great apes"). The
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According to the “The Birth of Childhood‚” Homo erectus developed their brain size and brain matter before birth and after birth. This is because Homo erectus required less developmental nourishing than modern humans. Other information provided by “The Birth of Childhood‚” suggests that the Homo erectus died out in 1.6 million years ago. According to “The Birth of Childhood‚” suggest that the Homo erectus was the first ancestor to have a similar body plan to the modern
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Summary: Humans‚ apes and monkeys share a common ancestor. This ancestor lived about 45 million years ago. Many fossils have been found traits of both humans and apes; also comparisons of modern humans and apes support this theory. PRIMATES Primates are a group of mammals that have special characteristics that include: both eyes are located at the front of the head and they provide binocular or three-dimensional vision; also all primates have 5 fingers (four fingers and a thumb). The ancestors
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Hominid Evolution The evolution of hominids has been and still is a heated topic of debate. Many scientists debate over which species can be classified as “human”. The root "hominid" refers to members of the family of humans‚ Hominidae‚ which consists of all species on our side of the last common ancestor of humans and living apes. The time split between humans and living apes used to be thought of fifteen to twenty millions of years ago‚ but now the time period has shifted to around five
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ADAPTING TO THE CHANGING ENVIRONMENT: Bipedalism Bipedalism- the condition of being two-footed or of using two feet for standing and walking. The hominoid apes flourished at the very beginning of the Miocene epoch‚ when lush tropical rain forests were the predominant habitat. In the Opinion of many Anthropologists‚ bipedalism was adaptive for life amid the tall grasses of the savannas. Baboons and some other old World monkeys also live in savanna- type environments‚ yet although they can
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ultimately gave rise to the genus Homo‚ which includes Homo sapiens. But not everyone agrees with this view. Critics say the skeletons are not old enough to be the precursors to Homo. Others say the similarities can be chalked up to the diversity of early hominids‚ but that aspects of A. sediba’s anatomy make it unlikely candidate for being our forebears. Donald Johanson‚ the Arizona State University paleoanthropologist who discovered “Lucy” in 1974‚ said the first homo species appeared 2.4 million
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