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Chapter 22 Opener Structural changes accompany changes in function

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Presentation on theme: "Chapter 22 Opener Structural changes accompany changes in function"— Presentation transcript:

1 Chapter 22 Opener Structural changes accompany changes in function
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2 Figure Averaged over long periods, the rate of evolution may be low, even though there are episodes of rapid evolution Evolution-2e-Fig jpg

3 Figure Averaged over long periods, the rate of evolution may be low, even though there are episodes of rapid evolution Evolution-2e-Fig R.jpg

4 Figure An example of stasis: specimens of the bivalve Macrocallista maculata from a living population and from fossil deposits dated at 1, 2, 4, and 17 Mya Evolution-2e-Fig jpg

5 Figure 22.3 A quantitative expression of stasis in shell characters of bivalves in the fossil record
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6 Figure A quantitative expression of stasis in shell characters of bivalves in the fossil record (Part 1) Evolution-2e-Fig jpg

7 Figure A quantitative expression of stasis in shell characters of bivalves in the fossil record (Part 2) Evolution-2e-Fig jpg

8 Figure A comparison of empirically measured rates of character evolution with results from several models Evolution-2e-Fig jpg

9 Figure A comparison of empirically measured rates of character evolution with results from several models (Part 1) Evolution-2e-Fig jpg

10 Figure A comparison of empirically measured rates of character evolution with results from several models (Part 2) Evolution-2e-Fig jpg

11 Figure A comparison of empirically measured rates of character evolution with results from several models (Part 3) Evolution-2e-Fig jpg

12 Figure A comparison of empirically measured rates of character evolution with results from several models (Part 4) Evolution-2e-Fig jpg

13 Figure 22.5 An example offered by Richard Goldschmidt as a possible case of saltational evolution
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14 Figure Two very different taxa may have evolved gradually from a common ancestor, even though no form precisely intermediate between them ever existed Evolution-2e-Fig jpg

15 Figure A model of the evolution of color pattern in Müllerian mimics such as Heliconius butterflies Evolution-2e-Fig jpg

16 Figure A model of the evolution of color pattern in Müllerian mimics such as Heliconius butterflies Evolution-2e-Fig R.jpg

17 Figure 22.8 Two “living fossils”
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18 Figure 22.9 Adaptive genetic changes may restrict subsequent evolutionary potential
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19 Figure 22.9 Adaptive genetic changes may restrict subsequent evolutionary potential (Part 1)
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20 Figure 22.9 Adaptive genetic changes may restrict subsequent evolutionary potential (Part 2)
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21 Figure 22.10 Complex structures, if lost, are generally not regained, but their function may be
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22 Figure The right hand (in dorsal view) of two members of the bear family, a brown bear (left) and the giant panda (right) Evolution-2e-Fig jpg

23 Figure The propensity for evolutionary changes to be in directions close to the axis of greatest phenotypic variation (in the marine ostracode crustacean Poseidonamicus) Evolution-2e-Fig jpg

24 Figure The propensity for evolutionary changes to be in directions close to the axis of greatest phenotypic variation (in the marine ostracode crustacean Poseidonamicus) (Part 1) Evolution-2e-Fig jpg

25 Figure The propensity for evolutionary changes to be in directions close to the axis of greatest phenotypic variation (in the marine ostracode crustacean Poseidonamicus) (Part 2) Evolution-2e-Fig jpg

26 Figure A lungless bolitoglossine salamander (Hydromantes supramontis) captures prey with its extraordinarily long tongue Evolution-2e-Fig jpg

27 Figure 22.14 Intermediate stages in the evolution of complex eyes
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28 Figure 22.14 Intermediate stages in the evolution of complex eyes (Part 1)
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29 Figure 22.14 Intermediate stages in the evolution of complex eyes (Part 2)
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30 Figure 22.14 Intermediate stages in the evolution of complex eyes (Part 3)
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31 Figure A schematic representation of a modular organization of the phenotype and its genetic basis Evolution-2e-Fig jpg

32 Figure Two ways in which interactions among suites of genes and characters can evolve by changes in pleiotropic effects Evolution-2e-Fig jpg

33 Figure Two ways in which interactions among suites of genes and characters can evolve by changes in pleiotropic effects Evolution-2e-Fig R.jpg

34 Figure 22.17 Computer simulations of the diversification of a clade
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35 Figure 22.18 A passive trend: Cope’s rule in Late Cretaceous North American mammals
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36 Figure 22.18 A passive trend: Cope’s rule in Late Cretaceous North American mammals
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37 Figure 22.19 A driven trend: Cope’s rule in the horse family, Equidae
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38 Figure 22.20 A trend caused by species selection
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39 Figure A phylogeny of some genera in the mustard family (Brassicaceae) reveals that DNA content (C-value) has both increased and decreased Evolution-2e-Fig jpg

40 Figure A phylogeny of some genera in the mustard family (Brassicaceae) reveals that DNA content (C-value) has both increased and decreased Evolution-2e-Fig R.jpg


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