Evidence for evolution through Analogous structures organs that have similar

Evidence for evolution through analogous structures

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4. Evidence for evolution through
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5. Evidence for evolution from BiogeographyAustralia brokeapart from Gondwanaland AFTER marsupial mammals had evolved butBEFORE placental mammals had evolved.
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Notice the convergence of marsupials in Australia with placental mammals in other continents.This is a classic example of convergent evolution
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6. Evolution of resistance to biocides Figurefrom SimUText
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SeetheTreeof LifeWebsite CreativeCommons license Copyright © 2005 Robert Bingham Aves: Sphenisciformes 7. Genetic phylogenies
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8. Observations of populations over timeSimUText example:There is variation in armor plating among threespinesticklebacks in Lake Washington. Is therean adaptivevalueof this armor?
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BEFORE clean-up water was murky After clean-up water was clear courses.washington.edu/.../lake%20wash%20pic.jpg
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For this outcome to occur, the presence of plates must be: 1.Variable 2.Heritable 3.Improve survival when there is selection pressure (survival selective) SimUText exercise will illustrate this point!
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SimUText Homework 1 • 10 points, Due Monday, Feb 7 • Do the “graded questions” in the Evolution for Ecology chapter • Software can be downloaded onto some NAU computers, if necessary? • Who needs that? • Let me know if you have problems!
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So, WHY is the theory of evolution through natural selection so controversial?
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