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Natural Selection
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Survival and reproduction of those organisms best adapted to their surroundings.
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1. Variation in Traits
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2. Differential Reproduction
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3. Heredity
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4. End Result
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Types of Selection Pressures Due to environment. E.g. temperature. Due to other species. E.g. symbiosis. Due to mating. E.g. peacock plummage.
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Peppered Moths and the Industrial Revolution Lichen Covered Tree Soot Covered Tree
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Catterpillar Mimics Snake
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Hummingbird and Flower Selection
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Artificial Selection Survival and reproduction of those organisms that are selected by humans. A.k.a. breeding. Plant Breeding Animal Breeding
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