ANTH 2050 Chapter : ANTH 2050 Human Origins
Document Summary
50 - 57), appendix a, b, c, d, glossary (pp. Evolution: biological and cultural adaptations: biological - genetic; expressed in phenotype, cultural - e. g. , behaviors, technological - e. g. , tools. Some variations are passed to offspring: more offspring are produced than can survive, variations more suited often survive to reproduce, or reproduce more. 1. 5 million years ago (mya) - hominoids outside of tropical environment adapation. Culture: non-biological means of adapting to our natural and social environment e. g. , tools, clothing, language, writing. Flexible shoulder joints, vertical positioning of trunk: 3-d vision, reduced sense of smell, hands and feet with five digits, grasping thumb, generalized dentation, extended gestation and maturation, high degree of socialization. Large brain/forehead: bipedialism, reduced body hair, reduced physical agility, number of chromosomes (humans = 46; chimps = 48) East african rift: extend over 6000 km, narrow zone where african plate is in the process of splitting into two new plates (nubian and somalian subplates.
