Anthropology November 17th

Anthropology November 17th - Anthropology November 17th...

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Anthropology November 17 th This is the last section We are going over genetics mainly human genetics We are now looking at modern humans. The spread of the humans across the rest of the world We have Australia by around 40,000 years ago. The new world, 12,000 or 20,000 years ago. We spread out over south America. Why are these people moving, out of there habitat? Looking for food, the food can be moving, population is growth. At about 10,000 years ago we see domestication and agriculture. It supplys population density. Domestification people are everywhere We are making the step of founding seeds and planting them to get more food to grow. It kept camps in the area. First animal domesticated was a dog around 18,000 years ago for hunting. Rat’s live off of humans Monkeys, macquacs 20 different species. Each of these habitats give rise to speciation. Humans only have one species. Culture has separated us from different from other animals. Humans have genetic things, one really important one looking at biological variations within our species. o For most animals biology is the primary mechanism that leads to speciation. o Genetics we do not differentiate we find various adapataions to the environment. Skin color particular habitats and environment Lactose intolerance Sickle cell anemia Humans genetic adaptations; as indivuals acclimatization. Acclimatization the basic ability to adapt we do individually. Each of us has the ability to do, in our own lifetime. o Different ways it occurs Developmental why we are growing, the habitat you grow up in influences how your body adapts. Growth Non-reversible. High altitude At different sea levels we have different amounts of oxygen because
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less molecules have less packets of oxygen. Barrel chestedness- lung capacity is bigger for people who live in high altitude areas like Tibet they have a different skeleton. People are of less stature and require less size so blood circulates better Cold weather – short growing season. High ultraviolet radiation from the sun The average temp is 98.6 f you can reduce your exposure to heat loss by wearing clothing (no streaking for you) o Physiological Are reversible, short term Environmental stress, heat or high altitude. Blood doping, hemoglobin rich blood. Its hard for pregnant woman to live in high altitude areas. Homeostasis your body struggles to adapt with this. o Habituation, not physiological Your body stops responding to a stresser, like sweating when your hot, your body stops paying attention to the stress. Noise, music, white noise. On Monday we will look at genetic variation. November 20
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This note was uploaded on 05/08/2008 for the course ANTH 101 taught by Professor Ingmanson during the Spring '08 term at Bridgewater State University.

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Anthropology November 17th - Anthropology November 17th...

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