CAS AN 263- Midterm Exam Guide - Comprehensive Notes for the exam ( 28 pages long!)

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Biological anthropology approach to studying human behavior: focus on things humans have in common throughout different cultures, explore reasons why human cultures may differ. Immediate causation: ultimate approach, why things happen evolutionary explanation, adaptive significance, life history approach: the relationship between culture and biology changes across the lifespan. The apes (hominoids: greater apes: humans, gorillas, apes, bonobos, chimpanzees, orangutans, humans share common ancestors with chimpanzees 6-7 mya, lesser apes: gibbons, siamang. Gibbon & siamang (family: hylobatidae: 28-55 lbs, 17 species (4 genera, very specialized locomotor adaptations = arboreal brachiators, mostly frugivorous (fruit) Gibbon: social & sexual system: monogamous (mated pairs, sexes about the same size, no estrus swelling in females (concealed ovulation, territorial; defend and establish territory with song, females intolerant of non-group females (high testosterone levels, fairly aggressive) Orangutans (genus: pongo: 100-200 lbs, 3 subspecies: bornean & sumatran, arboreal quadrumanous climbers, prefer fruit; eat bark and leaves ( fallback foods)