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091007_DarwinNaturalSelection

091007_DarwinNaturalSelection - Intro to Organismal Biology...

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9/10/2007 1 Intro to Organismal Biology 9/10/07 Announcements 2 1. Lab #1 : Assignment due at start of lab this week. 2. Email : Use appropriate greeting, punctuation, etc. Include “ Org Bio ” in subject line 3. Blackboard : http://framingham.blackboard.com Update your email address!! Check often for announcements Today’s class Introduction to evolution, continued: Darwin & the voyage of the HMS Beagle Darwin’s great insight: Descent with modification Natural selection: a mechanism of evolution that leads to adaptation (Relevant reading: Ch. 22) 4 Voyage of the HMS Beagle 5 Charles Lyell Voyage of the HMS Beagle 6 Earthquake in Chile shifts coastline… Voyage of the HMS Beagle 7 Marine fossils found high in Andes Mts
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9/10/2007 2 Voyage of the HMS Beagle 8 Evidence suggests the earth really is ancient. Voyage of the HMS Beagle Darwin observed and collected thousands of South American species Began to see how living species are connected: 1.
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