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ANTH 1030 - Modern Human Origins

by: Jazmine Beckstrand

ANTH 1030 - Modern Human Origins ANTH 1030-001

Marketplace > University of Utah > ANTH > ANTH 1030-001 > ANTH 1030 Modern Human Origins
Jazmine Beckstrand
The U
GPA 4.0

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About this Document

These notes cover the lecture material and assigned reading for the fourth week of class.
World Prehistory: Introduction
Brian Codding
Class Notes
Anthropology, Modern, humans, Prehistory, Archaeology
25 ?




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This 2 page Class Notes was uploaded by Jazmine Beckstrand on Saturday September 17, 2016. The Class Notes belongs to ANTH 1030-001 at University of Utah taught by Brian Codding in Summer 2016. Since its upload, it has received 9 views. For similar materials see World Prehistory: Introduction in ANTH at University of Utah.


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Date Created: 09/17/16
ANTH 1030 – Modern Human Origins Definitions Key Concepts Locations * = on exam The Multiregional Model - hypothesizes that human populations throughout the Old World evolved independently, first to archaic H. sapiens, then to fully modern humans.  Argues for multiple origins of H. sapiens and no migrations later than those of H. erectus. Out-of-Africa Model - H. sapiens evolved in one place, and then spread to all other parts of the Old World.  Assumes population movement from a single point of origin.  Implies that modern geographic populations have shallow roots and were derived form a single source in relatively recent times. Mitochondrial DNA (mtDNA): DNA inherited through the maternal line. AMHSS (anatomically modern homo sapiens) Cranium Morphology  Cranial capacity > approx. 1,350 cc  Relatively vertical forehead  Vaulted braincase  Smooth and rounded occipital  Parietal bossing  Small or absent brow ridge  Flat face tucked under brain  Prominent chin AMHSS Post Cranium Morphology  Slender build  Long-limbs and short trunks  Barrel-shaped thorax (chest)  Delicate pelvis with more vertical iliac blades AMHSS: physiological change BMHSS (behavioral modern): behavior change  Intensified foraging practices  Diverse tool production  Art production accelerates  Human populations expand  Increased number of archaeological sites  Diversification of haplogroups  Populations extend out of Africa Hypotheses for the Emergence of BMHSS  Climate change (?)  Greater variation before and after; incorrect  Increased tool uses and/or populations growth  Cause of consequence; incorrect  Symbolic cognition and the evolution of language  Emergence of modern human life-history  Core Hypotheses  Human Spark  Accelerated Cultural Evolution  Resource Intensification  Innovation: the act or process of introducing new ideas, devices (technology), or methods.  *know punctuated vs gradual trees Human Spark  Natural selection reduces variation  Mutation introduces variation  Any mutation that provides selective benefits should spread through a population  A mutation that increased neural capacity (memory or language) would lead to increase innovation  Behavior changes not accounted by brain size alone - did some mutation change the organization of the brain? Accelerated Cultural Evolution  Information is adaptive (esp. in variable environments)  Individual learning (innovation) = costly  Social learning (diffusion) = cheap  Innovators are only a small subset of the population  Larger populations should have more innovators  Larger populations should have more cumulative information Resource Intensification - working harder to get more resources out of the same area (more food, more people, higher cost).  Populations are structured by resource availability  Large populations place a burden on local resources  Individuals must intensify work effort to sustain populations  This inadvertently increases local carrying capacity  Encourages innovation to reduce work effort


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