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Not Necessarily on Purpose

Domestication and Speciation in the Canidae Family



Author:

Thomas Horvath
Biology Department
SUNY College at Oneonta
horvattg@oneonta.edu

Abstract:

In this “clicker case,” students learn about evolution, speciation, and natural selection as well as interpret phylogenies as they apply to the Canidae family. The case is based on the idea that the domestication of the dog was not likely an intentional event in human history. Rather, the dog as we know it was probably a result of natural selection events. Later intentional selective breeding events formed the many different breeds of dog. The case is designed for an introductory biology course in which personal response systems, or “clickers,” are used.  It consists of a series of PowerPoint slides (~2MB) punctuated by multiple-choice questions that students respond to using their clickers. It could be adapted for use without these technologies.

Objectives:
  • Interpret phylogenetic diagrams.
  • Understand how natural selection can act on a population to cause speciation.
  • Distinguish between natural and artificial selection events.
Keywords: Biological species concept; natural and artificial selection; speciation; evolution; dog; canids; Canidae; canine; phylogenetic; phylogeny; cladogram; co-evolution; coevolution
Topical Area: N/A
Educational Level: High school, Undergraduate lower division
Formats: PDF, PowerPoint
Type/Method: Clicker, Interrupted
Language: English
Subject Headings: Evolutionary Biology   Biology (General)   Zoology  
Date Posted: 09/14/09
Date Modified: N/A
Copyright: Copyright held by the National Center for Case Study Teaching in Science, University at Buffalo, State University of New York. Please see our usage guidelines, which outline our policy concerning permissible reproduction of this work.

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Love this case. It worked like a charm. I introduced it with this YouTube video on silver foxes that connects seamlessly with the story: http://www.youtube.com/watch?v=EoB0pdhxfZs


Jesus A. Rivas
Biology
New Mexico Highlands University
Las Vegas, NM
rivas@nmhu.edu
4/29/2013



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