evidence for evolution...evidence for evolution biogeography fossil record comparative anatomy...
TRANSCRIPT
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Evidence for Evolutionbiogeography
fossil record
comparative anatomy
homologous structures
vestigial structures
analogous structures
comparative embryology
similar biochemistry (DNA and proteins)
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Lamarck1744-1829
Believed in “use and disuse”
If you needed a trait, you could develop it in your lifetime
Believe you would pass on acquired traits to your offspring
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Charles Darwin
1809-1882
Sailed around the world 1831-1836
Researched Galapagos Islands
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Peppered Moth Simulation
Work in partners
Simulate natural selection in moths
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Misconceptions
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Misconceptions
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Misconceptions
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Misconceptions
MISCONCEPTION: Evolution is like a climb up the ladder of progress – organisms get “better.”
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Natural Selection Descent with Modification
More members are born into a population than will survive
Not all members are the same (genetic diversity)
Some members are better suited to environment
Those better suited will survive and pass traits on to offspring
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Fitness: The ability to survive and reproduce. Increased fitness = survival
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Natural Selection and Fitness
Over time, natural selection results in changes in the inherited characteristics of a population.
Increase in fitness of a species