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Human Life History - Anthropology

Human Life History - Anthropology - o Humans gain weight at...

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Anthropology 116 – Human Life History Human Life History Lineage specific effects o Body size o Growth rates o Fertility o Mortality Humans live to be about 70-80 years Variation in primate body size o Why is there such a range in body size o Throughout evolution humans have gotten larger Humans are the only ones with a childhood o Only concern is with growing o No other primate does this The idea of menopause o Most organism die after they are done reproducing Comparison between human and Chimpanzee life histories o Gestation period is nearly identical o Humans are born larger (bigger brains) o Humans wean infants earlier When babies start eating normal food – Gerber food, etc No Chimpanzee weaning food Mother can get pregnant again Lot of variation in this
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Unformatted text preview: o Humans gain weight at about the same time after birth but grow for several more years Humans grow for several more years – the childhood period o Humans are larger as adults • Childhood – slow constant growth o Mice have no childhood o Chimps have about a 1 year childhood – moderate if any o Humans 9 years childhood for boys This is unique • Hunter Gatherers o Sexual division of labor o Humans hunt big game Between 20 – 50 men are bringing back large numbers of calories for their group Women are not bringing back nearly as many calories as the men are o Chimps eat what they produce – hunt/gather o Humans – most food comes for other individuals •...
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