09 lecture final

09 lecture final - Evolutionary Biology What does Tree of...

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1 Evolutionary Biology What does Tree of Life Theory try to explain? How to test Tree of Life Theory Whales, birds and humans What does Natural Selection Theory try to explain? Discussion Board contains new items on hens teeth and ID theory EXAM THIS THURSDAY- 50 MULTIPLE CHOICE QUESTIONS Our place in the Tree of Life “Evolutionary progress from chimps to man” What’s wrong with this illustration? A. The middle figure should have had whiter skin. B. The second from left figure should have been shown with primitive tools. C. The far right figure should have been shown with clothes on. D. Modern chimpanzees, the far left figure, could not have been the ancestor of our species. The more recent the common ancestor of several living species, the more similar their genes should be. Why? Because the LESS evolutionary time that passes, the LESS time for mutations to accumulate in a species. Species X: A A T G G C A T T T A C G G C T A A A * * Species Y: A A T T G C A T T T A C G G A T A A A * * * * * Species Z: A T T C G C A T C T A G G G A T A T A X Y Z Z X Y Y Z X AB C Which of the 3 hypotheses is supported by the evidence ? Base sequences
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2 Old world Gibbon Orangutan Gorilla Chimp Human monkeys 1 2 3 4 5 6 7 % difference in DNA Our living relatives These 2 vireos differ more genetically than humans and gorillas do. W X Y Z % difference in DNA 1 2 3 4 5 6 How different are the DNA base sequences of species X and Y? A. 2%, B. 3%, C. 4%, D. 5% W X Y Z % difference in DNA 1 2 3 4 5 6 How different are the DNA base sequences of species X and Y? B. 3%
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09 lecture final - Evolutionary Biology What does Tree of...

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