ANT101H5 Lecture Notes - Lecture 10: Carboniferous, Strepsirrhini, Pleistocene
Document Summary
Lecture 10: primate origins: rise of the primates (02/07/2018) Small changes in allele frequencies acting on the human gene pool. Human diversity seen as the result of microevolutionary forces. Appearance of new species due to many generational changes in allele. Do not pass through similar stages during embryonic development. Organism do not share a common ancestor. Eg. wing of butterfly and wing of bird, serves common function (flying) but not indicative of common ancestor. Structures possessed by 2 different organisms that arise in a similar fashion. Pass through similar stages during embryonic development. Organism that share a common ancestor (or evolutionary relationship) A single ancestral species gives rise to 2 or more descendant species. Two phylogenetically unrelated organisms develop greater similarities. A species way of life considered in the context of its environment. Rapid diversification of an evolving population as it adapts to a variety of available niches. Every speciation event is preempted by a major global climatic change.
