BIOL211#18 - Chapter 23 Evolution An Introduction to...

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1 Chapter 23 An Introduction to Evolution Evolution A heritable change in one or more characteristics of a population from one generation to the next Microevolution Macroevolution Species A group of related organisms that share a distinctive form In species that reproduce sexually, members of the same species are capable of interbreeding in nature to produce viable and fertile offspring Population All members of a species that live in the same area and have the opportunity to interbreed A population is the smallest unit that can evolve The Theory of Evolution A new era of biology began on November 24, 1859 On that day, Charles Darwin published On the Origin of Species by Means of Natural Selection Charles Darwin 1809 - 1882 The Origin of Species focused biologists’ attention on the great diversity of organisms and ushered in the era of evolutionary biology
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