BIOL 123 Lecture Notes - Lecture 24: Homo Sapiens, Population Genetics, Directional Selection
Document Summary
21. 1 humans evolved from old world apes, which split from the rest of the primates about 20 million years ago. Closest relatives are the primates, which are divided into many branches. Ancestral primate led to hominids, old world monkeys, new world monkeys and prosimians. Ancestral ape led to humans, and other phylogenies (know them) like. Living at the same time as homo sapiens. 21. 2 chimpanzees are out closest living relatives, followed by gorillas. Hands are used to walk, while leaning on them. Suggests that they inherited common locomotion from a common. 21. 3 there were at least two major upright hominid lineages, which may have included ancestor multiple species each. Fossils that show our ancestors 3 million years ago. 21. 4 human evolution featured expansion of the braincase, reduction in the jaws, and changes to the rest of the skeleton. 21. 5 molecular genetic tools are crucial to unraveling the patterns of human evolution.
