Lecture 13 - Bio 121 Lecture 13 natural selection A....

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Bio 121 Lecture 13 – natural selection A. Introduction a. Species come from other species b. Biology doesn’t make sense without evolution B. Lamarck – needed to explain how variations arose and how they led to different speicies in different environments a. Use and disuse of parts a.i. Organisms had a built in drive to perfection a.ii. Became adapted by the use and disuse of parts b. Inheritance of acquired characteristics b.i. Modifications in lifetime would be passed on to the next generation c. Lamarck was right c.i. Adaptation was important c.ii. Evolution can take place gradually c.iii. Evolution takes place over long periods of time C. Darwin – born 1809, child of privilege a. And Wallace too! a.i. 1858 wrote to Darwin and said he had come to the say conclusions a.ii. Jointly announced new theory of evolution in 1859 a.iii. Darwin published “On the origin of species by means of natural selection” a.iii.1. Sold out first day a.iii.2. Never been out of print since b. Observations b.i. Without environmental pressure, every species multiplies exponentially
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This note was uploaded on 03/12/2012 for the course BIO 121 taught by Professor Minchella during the Fall '10 term at Purdue University-West Lafayette.

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Lecture 13 - Bio 121 Lecture 13 natural selection A....

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