Origins Flashcards
if the whole history of the earth was on a 24h clock, at what time did humans appear
4 seconds before midnight
theory on how our common ancestor with chimpanzees got separated
population got caught on either side of the Congo river and lost contact
speciation definition
when a group within a species separates from the main group and develops unique characteristics
Ausralopithecus
first bipedal ancestor
Had 1/3 of our cranial size
Bipedalism allowed for;
Gathering in arms
Tool use
Seeing farther into the horizon
Keeping us cooler
Homo habilis
“handyman”
Used/made tools
brain size 1/2 of ours
Homo erectus
“upright man”
First to move out of Africa
Homo heidelburgensis
Immediate ancestors before modern humans
Split into two, homo neanderthalensis and homo sapiens
Neanderthals
Roamed by Europe
Generally bigger than Homo sapiens, including brain size
homo sapiens
“wise man”
left Africa 70 thousand years ago (1 second before midnight
Theories proceeding the theory of evolution that lead to its conception
Theory of Common Descent
Transmutation of species
Theory of Common Descent
idea that all organisms we see today descended from one or a few organism
Kant
Erasmus Darwin
Transmutation of species
idea that one species can turn into another
two cofounders of the theory of evolution
Charles Darwin
Alfred Wallace
Wallace’s view of evolution
creationist view
- natural selection could not explain human’s math/art/music capabilities
- a spiritual force intervened in the evolutionary process
- evolution is directional
