Lectures1_2_handout - BioG1780 Evolution and Biodiversity...

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BioG1780 Fall 2010 Evolution and Biodiversity Today’s lecturer: Kelly Zamudio Lectures 1 & 2: August 25 & 27, 2010 1. Introductory slideshow: biodiversity and evolutionary biology as far-reaching and very exciting disciplines. 2. Reminders about some course logistics: • Read through the syllabus in the next few days — we will talk about course logistics in lecture on Friday • No discussion sections this week – work with us to get settled in a section (see syllabus) • iClickers will be used in lecture starting Friday (August 27)—so don’t forget it! • Track 2 “Writing in the Majors. ..” applications are due on Sunday Aug 29th! Applications can be found on Blackboard. 3. Introductory Lecture 1. The purpose of this lecture is to give you an overview of some of the most important themes we will cover this term. Our first lecture covers “selection thinking,” which provides a framework for interpreting how natural selection drives biological patterns. The second lecture (Friday) addresses “tree thinking,” which is how we use history—often in the form of evolutionary trees, or phylogenies—to understand biological diversity and to make biological inferences. These lectures parallel textbook chapter 1. We will return to these topics throughout the semester. Study suggestion: read chapter 1, review the lecture notes, and make sure that you understand what we mean by “selection thinking” and “tree thinking.” I. Evolutionary Biology A. What is evolution? • Microevolution: changes in allele frequencies in a population over time • Macroevolution: the process of descent with modification and divergence by which multiple species arise from a common ancestor B. What do evolutionary biologists do? Research in evolutionary biology has two major themes
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This note was uploaded on 12/20/2010 for the course BIOEE 2780 at Cornell.

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Lectures1_2_handout - BioG1780 Evolution and Biodiversity...

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