Fossil, remains of ancient organisms, Evolution, process of change over time, Occurs to populations NOT INDIVIDUALS, Charles Darwin, one of the first scientists to publish his ideas about evolution in a book, “The Origin of Species: By Means of Natural Selection”., Natural Selection, Selecting for an organism's traits/ adaptations making it better suited to survive, reproduce, and pass on those traits., Survival of the fittest, The organism with the traits that are best suited to it's environment is more likely to survive and reproduce, Fitness, the ability for an organism to survive in its environment and reproduce, Homologous Structure, Same structure different function, Analogous Structure, Different structure, same function. EX: Bird wing and butterfly wing, Vestigial Structure, Structures that no longer serve a purpose EX: Whale hips, Adaptations, inherited characteristic which increases chances of survival, Directional Selection, Individuals that express a more extreme form of a trait have a higher fitness than those who express the average trait, Stabilizing Selection, Individuals that express the average trait have a higher fitness than those that express an extreme form of the trait, Disruptive Selection, Individuals with either extreme form of the trait have a greater fitness than those with the average form of the trait.
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Unit 5: Evolution
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Blirvin
G9
Biology
Evolution
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