Evolution and Biodiversity

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Evolution and Biodiversity
G. Tyler Millers Living in the Environment 14th
Edition Chapter 5
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Key Concepts

• Origins of life

• Evolution and Evolutionary processes

• Ecological niches

• Species formation

• Species extinction

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Origins and Early Evolution of Life

• Chemical evolution

• Biological evolution

Fig. 5-2 p. 88
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Evolution and Adaptation

• Macroevolution

• Microevolution

• Gene pool

• Mutation

• Natural selection

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Natural Selection

• Differential reproduction

• Adaptive trait

• Coevolution

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Ecological Niches and Adaptation

• Ecological niche

• Fundamental niche

• Habitat

• Realized niche

Fig. 5-4 p. 91
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Broad and Narrow Niches

• Generalist species

• Specialist species

Refer to Spotlight p. 92
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Speciation, Extinction, and Biodiversity

• Speciation

• Geographic isolation

• Reproductive isolation

Fig. 5-7 p. 94
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Extinction

• Background extinction

• Mass extinction

• Mass depletion

• Adaptive radiation

• Human Impacts

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Human Impacts on Evolution

• Artificial Selection
• Genetic Engineering
• Concerns about Genetic Engineering