FA2008 - BILD 3 - Lecture 02 (History of Evolutionary Thought - 02)

FA2008 - BILD 3 - Lecture 02 (History of Evolutionary Thought - 02)

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10/3/08 1 Only illustration in Origin - hypothetical phylogenetic tree. What did Darwin say in Origin? 1. All organisms evolved from common ancestor - descent with modification 2. Mechanism - natural selection How were Darwin’s ideas accepted? A. Descent with modification from a common ancestor was widely accepted soon after publication could be reconciled with religious views (God started whole thing off, let evolution proceed) data were overwhelming B. Natural selection - universally rejected for 50-60 years Why was the idea of natural selection rejected? 1. Seemed to preclude religious belief of divine purpose (no grand purpose to natural selection - irreconcilable) 2. Earth isn’t old enough for natural selection to create diversity we see today (10-100 million years old) 3. No understanding of inheritance a. Blending inheritance - inherited characteristics are mixed, like paint Why would the idea of “blending inheritance”
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This note was uploaded on 03/31/2009 for the course BILD 632282 taught by Professor Henter during the Spring '08 term at UCSD.

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FA2008 - BILD 3 - Lecture 02 (History of Evolutionary Thought - 02)

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