311DChap22 - Descent with modification One of the key words...

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Descent with  Descent with  modification modification One of the key words of our modern  time is Evolution 
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Outline Outline 1. Key concepts 2. Darwin developed the theory of evolution       based on his observations and other  evidence a.  Darwin’s observations b. Factors that influenced Darwin’s  thinking 3. Natural selection: A mechanism of evolution 4. More evidences 5. Key terms 6. Conclusions
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Key Concepts: Key Concepts: Evolutionary theories gave early scholars new ways  to interpret the occurrences in the world Today, biological evolution is interpreted as  heritable changes  Darwin and Wallace explained evolution on the  basis of Natural Selection The traits that characterize a population can change  over time
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Lamarck’s Theory of Evolution Lamarck’s Theory of Evolution Lamarck Theory of  Inheritance of  Acquired  Characteristic
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Linnaeus (classification) Hutton (gradual geologic change) Lamarck (species can change) Malthus (population limits) Cuvier (fossils, extinction) Lyell (modern geology) Darwin (evolution, natural selection) Mendel (inheritance) Wallace (evolution, natural selection) 1750 American Revolution French Revolution U.S. Civil War 1800 1850 1900 1795 Hutton proposes his theory of gradualism. 1798 Malthus publishes “Essay on the Principle of Population.” 1809 Lamarck publishes his theory of evolution. 1830 Lyell publishes Principles of Geology. 1831–1836 Darwin travels around the world on HMS Beagle. Darwin begins his notebooks on the origin of species. 1837 Darwin writes his essay on the origin of species. 1844 Wallace sends his theory to Darwin. 1858 The Origin of Species is published. 1859 Mendel publishes inheritance papers. 1865 Early Beliefs, and New Discoveries Aristotle – believed that each kind of organism was distinct  from all the rest
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Charles Darwin [1809-1882] called  evolution  “Descent with  modification”
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Darwin - Voyage of the Beagle - 1831 Darwin - Voyage of the Beagle - 1831 At age 22, Charles Darwin began a five-year, round- the-world voyage aboard the  Beagle He collected and examined the species that inhabited  the regions the ship visited EQUATOR Galapagos Islands
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Darwin’s observations Darwin’s observations Prevailing ideas about species: they did  not change or interbreed  Darwin’s evidence for change came 
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This note was uploaded on 05/05/2008 for the course BIO 52030 taught by Professor Zhao during the Fall '07 term at University of Texas at Austin.

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311DChap22 - Descent with modification One of the key words...

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