Evolution and Life's Diversity
(How and why questions.)
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Purpose: To focus you on what is significant and draw connections for understanding, which leads to memory and application. ("TURA") Pages 269-283 in "Miller and Levine"
- What must replace "belief" in science?
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- How is evolution defined in simple terms?
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- Why was Darwin's 5 year voyage so significant ? (lines 16 and 17)
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- Darwin had an analytical mind. What is meant by this and how did it help Darwin?
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- Why have so many species disappeared over time?
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- What is meant by fitness?
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- Why are there so many different techniques for survival? (Hint: think of ecology.)
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- Why do you suppose Darwin waited so long before publishing his book "The origin of Species"?
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- Dawin provided strong evidence that each species is descended from.......
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- Explain Darwin's Principle of Common Descent.
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- How did Darwin explain the way fitness arises? (Explain as fully as you can. More will be said at the end of the course.)
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- How did Darwin's voyage on the Beatle influence his thoughts about life?
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- How is diversity of life related to evolution?
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- How is adaption related to fitness?
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Similarities In Early Development:
- Why are vertebrate embryos so similar in appearance for early stages? (P.283-285)
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- Why do embryos of different vertebrate species later become more dissimilar?
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- Why is it critical that genes controlling early development be relatively unchanged?
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- When are mutations most likely to occur in embryonic cells?
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- P284 - Explain why a bat's wing is homologous to the front flippers of a whale. (See fig.13-17.)
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- Why do organisms often carry organs that have little or no function?
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- How do we get evidence that snakes evolved from lizards? (4-footed ancestors) P.284
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