Principles of Evolution
• Early biological thought
• Genes within populations
• Hardy-Weinberg equilibrium
• Microevolution • Forms of Selection
Evolutionary thought• Pre-Darwin• Greek: created
simultaneously and unchanging
• Aristotle: ladder of nature• William Smith (1700s)
studied fossils• Fossils from organisms
that had gone extinct• Different organisms had
lived at different times.
Evolutionary thought• Cuvier: Catastrophism• Hutton and Lyell: natural
processes, uniforitarianism, slow, due to wind, water,earthquakes, and volcanos
• Lamarck: 1800s, inheritance of acquired characteristics
Descent with modification
Darwin and Wallace
• Mid 1800s• From Hutton and Lyell
age of earth is old• Proposed Natural
Selection
Natural Selection
Evidence for evolution
Evidence for evolution
Embryological similarities Analogous structures
Modern Evidence
• Artificial selection• Pesticide resistance• Antibiotic resistance
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