b112_Lecture_22

b112_Lecture_22 - 1/15/2008 HistoricalContext,1700s

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1/15/2008 BIOL 112, Chapter 22 1 BIOL 112–Chapter 22 Darwinian Evolution Historical Context, 1700s World Created by God a little less than 6,000 in the past. All current species are just as God created them (fixity of species) them (fixity of species). Most of the geological changes and the fossils were due to a worldwide flood. All Those Species •Carl (Carolus) Linnaeus - Published Systema Naturae in 1735. •Established binomial nomenclature. •Designed a useful hierarchical classification system. Linnaeus the Naturalist Hierarchical Classification Kingdom Animalia (Plantae, Fungi, etc.) Phylum Chordata Class Mammalia Order Carnivor Order Carnivora » Family Felidae Genus Felis Species Felis concolor Felis concolor
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1/15/2008 BIOL 112, Chapter 22 2 Linnaeus’ Type Concept Fixity of Species Fading After seeing more and more species, Linnaeus and others began to question whether species were unchangeable. Hybridization brought the concept into question. Fossils implied that some past species are extinct. Historical Context The First Stirrings of Evolution the inheritance of acquired characteristics. Organisms acquire characteristics during their lifetime that help them in some way and then pass them to their offspring. Lamarck still believed in creation and only saw evolution as causing small changes. The New Geologists James Hutton Gradualism Charles Lyell Uniformitarianism Georges Cuvier Paleontology
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1/15/2008 BIOL 112, Chapter 22 3 Catastrophism Vs. Uniformitarianism
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b112_Lecture_22 - 1/15/2008 HistoricalContext,1700s

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