Chapter 22

Chapter 22 - 19:08 Chapter22 o o o

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19:08 Chapter 22 What is evolution and adaptation? o Change over time of the genetic composition of a population o Decent of modern organisms with modification from preexisting organisms Evolutionary adaptation o Accumulation of inherited characteristics that enhance organisms ability to  survive in specific environments Pre-Darwinian Theory of Evolution (Lamarck) o Inheritance of acquired characteristics Bodies of living organisms are modified through the use or disuse of  parts These modifications are inherited by offspring This idea turned out to be wrong Evolution by Natural Selection o Darwin and Wallace developed the theory independently Darwin-voyage of the Beagle  Wallace-naturalist in Indonesia Natural Selection o forces resulting in the preservation of favorable adaptations
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Chapter 22 - 19:08 Chapter22 o o o

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