New search
download case
  • Overview
  • Teaching Notes
  • Answer Key
  • Comments/Replies

Reproductive Isolation in Columbines



Author:

J. Phil Gibson
Department of Biology and Department of Microbiology & Plant Biology
University of Oklahoma
jpgibson@ou.edu

Abstract:

This clicker case uses plant-pollinator interactions in columbines as a biological scenario to teach students about evolution, reproductive isolation, and angiosperm reproduction. The case is based on an approach to evolution education called tree-thinking that emphasizes the construction, interpretation, and evaluation of phylogenetic trees as an approach to addressing biological and evolutionary questions. It also presents basic concepts of structure-function relationships in flowers and how this influences behavior and effectiveness of different pollinators. Designed for use in a large introductory level class, the case could also be used in smaller classes and in upper-level courses. It is appropriate for use in units on evolution, floral biology, or multispecies interactions.

Objectives:
  • Describe how phylogenetic trees represent hypotheses about relationships among species that can be used to address evolutionary questions.
  • Understand how species represent different lineages that have diverged from a common ancestor.
  • Explain how floral features influence pollinator behavior and shape reproductive isolation in plants.
Keywords: Plants; flowers; columbines; Aquilegia pubescens; Aquilegia formosa; species concepts; tree-thinking; pollinators; pollination; mutualism
Topical Area: N/A
Educational Level: Undergraduate lower division, Undergraduate upper division
Formats: PDF, PowerPoint
Type/Method: Clicker, Interrupted
Language: English
Subject Headings: Biology (General)   Evolutionary Biology   Botany / Plant Science   Ecology  
Date Posted: 10/24/2012
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.

Teaching Notes


Case teaching notes are password-protected and access to them is limited to paid subscribed instructors. To become a paid subscriber, begin the process by registering here.

Teaching notes are intended to help teachers select and adopt a case. They typically include a summary of the case, teaching objectives, information about the intended audience, details about how the case may be taught, and a list of references and resources.

  Download Teaching Notes

Answer Key


Answer keys for the cases in our collection are password-protected and access to them is limited to paid subscribed instructors. To become a paid subscriber, begin the process by registering here.


  Get Answer Key



Name:
Email:
Department:
Institution:
City State:
Comments:
security code
Enter Security Code: