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Chapter 22 and 23 - Coggle Diagram
Chapter 22 and 23
Evidence for Evolution
Direct observation (e.g., drug resistance, Galápagos finches)
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Mechanisms of Evolution
Natural selection → adaptive, increases fitness
Genetic drift → random change, strong in small populations
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Gene flow → migration moves alleles, reduces differences
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Influences on Darwin
Lyell & Hutton → Earth shaped by gradual change, very old
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Genetic Variation
arises from mutations, recombination, sexual reproduction
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