ANT200Y1 Lecture Notes - Lecture 4: East African Rift, Orangutan, Natural Selection
Document Summary
2. second observation- takes walk around his house -variation of plants. Natural selection- the least important: problem for us. For darwin, the selection is about diversity, which is changing over time. 12-15 million years ago orangutan genus pongo. 6-8 million years ago gorilla genus gorilla. 12-15 million years ago human genus homo. All members of the human lineage after the split with the chimpanzee. Europe is the location of the early evolution. Geological and political reason about exploring west africa. Clock set to zero by volcanic eruption (cid:523)the clock kicking when the volcano blows- the ashes comes to the zero, the clock will reset to zero(cid:524) 4(cid:882) k (cid:523)potassium(cid:524) decays into argon at a known constant rate (cid:523)annual rate(cid:524) Two sample- one is for measuring the argon- problems related to the dating- different eruption indicates the different event. Context let us know the age of the fossil. )s when the diversification with the single village.
