BIO 263 Lecture Notes - Lecture 4: Symbolic Speech, Cladogenesis, Anagenesis
Document Summary
Tend to have hands/feet that can grasp, flattened nails instead of claws, larger brains relative to body, color vision, complex social behavior, parental care of offspring: prosimians. Relatively small, in trees, active at night: anthropoids. New world monkeys, old world monkeys, gibbons. Large bodies, long arms, short legs, no tail. All on ground except orangutang (walk w knuckles on ground/fist walk) Gorillas and chimps knuckle walk, sometimes on 2 legs but when aggressions. Humans bipedalism (synapomorphy of hominins which include h sapiens and other bipedal relative) Most closely related to common chimp and bonobos. Think grace bc slender! and showed bipedalism. Language tools capacity to reason, communicate: selection. Dna that coded for penis spines lost > same dna would restrict brain size so we got larger brains and smoother penis. Out-of africa hypo distinctive traits evolved in africa then migrated into eurasia. Fossils showing h sapiens occupied africa while neanderthals resided in europe and middle east.
