Descent with modification

Descent with modification - Descent with modification...

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Descent with Descent with modification modification One of the key words of our modern time is Evolution Outline Outline u 1. Key concepts u 2. Darwin developed the theory of evolution u based on his observations and other evidence a. Darwin’s observations b. Factors that influenced Darwin’s thinking u 3. Natural selection: A mechanism of evolution 4. More evidences 5. Key terms u 6. Conclusions 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 Lamarck ’s Theory of Evolution s Theory of Evolution Lamarck Theory of Inheritance of Acquired Characteristic Linnaeus (classification) Hutton (gradual geologic change) Lamarck (species can change) Malthus (population limits) Cuvier (fossils, extinction) Lyel (modern geology) Darwin (evolution, natural selection) Mendel (inheritance) Wal ace (evolution, natural selection) 1750 American Revolution French Revolution U.S. Civil War 1800 1850 1900 1795 Hut on proposes his theory of gradualism. 1798 Malthus publishes “Essay on the Principle of Population.” 1809 Lamarck publishes his theory of evolution. 1830 Lyel 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 Wal ace 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 Charles Darwin [1809-1882] called evolution “Descent with modification”
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Darwin Darwin - Voyage of the Beagle Voyage of the Beagle - 1831 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 Darwin Darwin ’s observations s observations Prevailing ideas about species: they did not change or interbreed
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This note was uploaded on 02/16/2010 for the course BIO 49970 taught by Professor Chinnery during the Spring '10 term at University of Texas.

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Descent with modification - Descent with modification...

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