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Chapter 15 Test Review
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1. Fossils
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Who Was Charles Darwin? While on his voyage around the world aboard the ____________, Charles Darwin spent about one month observing life on the ________________. There, he encountered some unique animals, such as ______ and ________. Galápagos Islands http://www.darwinadventure.com/pictures/galapagos_giantortoise.jpg http://mikebaird.com/ecuador/images/galapagos_off_ecuador_ng_map.jpg H.M.S. Beagle finchestortoises
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GALAPAGOS FINCHES The _____ of Galapagos finches have ______ to eating a _____ of _____. http://images.encarta.msn.com/xrefmedia/aencmed/targets/illus/ilt/T014608A.gif beaks adapted varietyfoods
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VOCAB Any ___________________ that increases an organism’s ______________ = _____________ http://www.3kitty.org/travelrama/Photos/123-21-4x6.jpg http://www.wildlife-traps.com/skunks.html http://www.atomtigerzoo.com/photos/images/20060421233733_duckfeet.jpg ADAPTATION inherited characteristic chance of survival
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Suddenly Darwin had incentive to publish the results of his work! In 1859 ____________________ presented _______ and proposed a ________ for evolution that he called __________________ On the Origin of Species evidence mechanism NATURAL SELECTION http://www.loc.gov/exhibits/world/images/s125.jpg
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1. overpopulation 2. variation 3. struggle to survive 4. Survival of the Fittest
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WHAT IS DARWIN’S THEORY? _________________ is found naturally in all populations http://www3.nationalgeographic.com/animals/images/primary/zebra-herd.jpg GENETIC VARIATION
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WHAT IS DARWIN’S THEORY? ______________________ means that members of each species must ________ for food, space, and other __________. http://www.wasatchcomputers.net/gallery/elk_fight.jpg STRUGGLE FOR EXISTENCE COMPETE RESOURCES
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WHAT IS DARWIN’S THEORY? Some organisms in a ________ are ________ to survive. http://www.cartoonstock.com/newscartoons/cartoonists/rrs/lowres/rrsn69l.jpg population less likely
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WHAT IS DARWIN’S THEORY? _____________________ organisms which are better adapted to the environment will ______ and ________, passing on their _____. http://www.poster.net/bedard/bed202.jpg SURVIVAL OF THE FITTEST survive reproducegenes
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WHAT IS DARWIN’S THEORY? ______________________ means that members of each species must ________ for food, space, and other __________. http://www.wasatchcomputers.net/gallery/elk_fight.jpg STRUGGLE FOR EXISTENCE COMPETE RESOURCES
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Ideas that shaped Darwin’s thinking: _____________________ He observed that babies were being born faster than people were dying. He reasoned that if the human population continued to grow, sooner or later there would be _______________________ Thomas Malthus (1798) insufficient space & food http://www.nndb.com/people/250/000024178/malthus.jpg
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Evidence for Evolution 1. DNA 2. Embryology 3. Comparative Anatomy (vesitgial, homologous, analogous) 4. Fossil Record
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Fossil Record Transitional fossils
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Comparative Anatomy Homologous
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Analogous
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Vestigial
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Comparative Embryology
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Image from: BIOLOGY AP EDITION by Campbell and Reece; Prentice Hall Publishing©2005 6. _______________ Similarities in ____ and ________ sequences suggest relatedness Similarities in DNA PROTEIN DNA
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Whales and sharks have a _____ body design even though they are very _______ organisms (one is a fish; the other, a mammal) because they have _________________ to living in a _____ environment. http://news.bbc.co.uk/2/shared/spl/hi/guides/456900/456973/html/nn1page1.stm http://www.flmnh.ufl.edu/fish/gallery/descript/TigerShark/scars.JPG = CONVERGENT EVOLUTION similar different independently adapted similar
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Whales are closely related to wolves, but don’t look or act much like them = divergent evolution Whales are distantly related to sharks, but look and act more like them = convergent evolution Conclusion: The pressure of the environment drives evolution
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Figure 15–14 Geographic Distribution of Living Species Section 15-3 Beaver NORTH AMERICA Muskrat Capybara SOUTH AMERICA Coypu Beaver Muskrat Beaver and Muskrat Coypu Capybara Coypu and Capybara Beaver and capybara are ______________ _______ living in very ________ environments, while beaver and musk-rat are _______________ _______ living in a ______ environment. Differences between beaver and capybara show _________ evolution, while similarities between beaver and muskrat show __________ evolution. Differences between _____________ muskrat and coypu show _________ evolution, while similarities between ______________ capybara and coypu show ___________ evolution. closely-related species different distantly-related species similar divergent convergent closely-related divergent distantly-related convergent
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Patterns of Evolution Divergent
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Convergent
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Coevolution
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Biogeography
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Most of the 140 species of marsupials in Australia are found nowhere else in the world.140 species of marsupials in Australia
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Worldwide Distribution of the Order Marsupiala Common Names Scientific Name No. Gene ra No. Speci es Distribution OppossumsDidelphidae1270Americas Marsupial Mice, Marsupial Cats, Tasmanian Devil Dasyuridae1450Australasia Tasmanian WolfThylacinidae11Tasmania Numbats/Banded Anteaters Myrmecobiid ae 11Australia BandicootsPeramelidae818Australasia Shrew Oppossums Caenolestida e 37South America Possums, Cuscuses, Gledero, Ringtails Phalangerida e 1340Australasia Noolkanger or Honey PossumTarsipedidae11Australia Koalas Phoscolaratid ae 11Australia WombatsVombatidae24Australia Kangaroo/Wallabies, Potoroos, Rat Kangaroos Macrophodid ae 1547Australasia
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Ideas that shaped Darwin’s thinking: In 1833 ___________ explains that the geological processes still ___________ have shaped Earth’s features over ________________ Charles Lyell occurring now http://www.biologydaily.com/biology/Sir_Charles_Lyell long periods of time
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Ideas that shaped Darwin’s thinking: ___________________________ was one of first scientists to recognize living things _______________ and that all species were ________ from other species. Lamarck published his hypothesis of ________________________ the year Darwin was born. changed over time Jean-Baptiste Lamarck (1809) descended Inheritance of Acquired traits http://www.educa.rcanaria.es/fundoro/00.corsi.htm
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The male fiddler crab uses its front claw to _________mates and fight off _____________. Through _________ use, the front claw becomes ________. The fiddler passes on this __________ characteristic to its offspring attract predators larger repeated acquired
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What’s wrong with Lamarck’s hypothesis? Lamarck didn’t know about genes and how traits are _______. If you lifted weights your whole young adult life, and then you had children, would your kids be more muscular? inherited NO! ________ traits can ____ be __________ to their offspring. http://www.geocities.com/arnold_schwarzenegger_pictures/ ACQUIRED NOT PASSED ON
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