ANTH 160D2 Lecture Notes - Lecture 3: Lamarckism, Darwinism, Mutation
11 Sep 2018
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Document Summary
Concepts and influences: shifting view of humanity"s position, species concept, taxonomy, and importance of reproduction, environmental influences on organisms, competition for finite resources, deep time and uniformitarianism. Lamarckian evolution: theory on the inheritance of acquired characteristics. Individuals can acquire traits within their lifespan: acquired traits help individuals adapt to their environment, those traits are then passed to the next generation. Darwinian evolution: decent with modification, variation exists within normal populations, some variations provide competitive advantages, resources are finite. Individuals are subject to natural selection: natural selection = individual in competition trying to acquire food and reproduce (individual succeeds or fails in environment, survival of the fittest, population evolve. Individual genotype: gene pool - the entire genetic material of a species that incorporates all variations at different frequencies. Individual genotype - an individual"s genetic material that contains some variation from other members of the organism"s species.
