Lesson 6 - Speciation and Evolution

Introduction
 
"Macroevolution is the evolution of species, which can be defined using the evolutionary species or the biological species concept. In order for species to be biologically distinct, reproductive barriers are needed to maintain their genetic differences from other species. These barriers consist of prezygotic and postzygotic isolating mechanisms."
 
Getting Started "Speciation usually occurs after two populations derived from a larger one are separated geographically. Eventually, the two populations might become so genetically different that even if members of each population came into contact, they would not be able to produce fertile offspring."


Focus on Learning
 
Use the course competencies listed below to focus your learning and use the lesson objectives to sharpen that focus.
 
Competencies By the end of the lesson , you should be able to:

  1. Describe and analyze the processes involved in evolution and their impact on all living things.
  2. Identify and describe the basic concepts of taxonomy and how they relate to the classification of all living things.
 
Objectives

To master the competencies, you should seek to understand how:

  1. Evolution of diversity requires speciation.
  2. Origin of Species usually requires geographic separation.
  3. Origin of species can occur in one place.
  4. The fossil record shows both gradual and rapid speciation.
  5. Developmental genes provide a mechanism for rapid speciation.
  6. Speciation is not goal-oriented.


Reading Assignments
 
Reading Assignment Reading is a very important component of an internet course. Read the assigned pages from your textbook before proceeding to the Activities, Study Help, and Assessment Sections.
 
Textbook Read the Assignment in Mader Concepts of Biology Textbook:
Speciation and Evolution: Chapter 14


Activities
 
Complete the Animation Activities. Feel free to open your book and notes as you work on them. The information in these activities is very helpful when completing the Animation Quiz that follows.
 
Animations
Complete the Animation Activities by Clicking the Links Below:
Animation Activity 1 - Allopatric Speciation
Animation Activity 2 - Stickleback Environment
Animation Activity 3 - Stickleback Fossil Primer
Animation Activity 4 - Stickleback Evolution
 
Complete the Virtual Lab Activity. Feel free to open your books and notes as you work on it. Complete the activity by reading the instructions, performing the lab exercise, downloading the post lab quiz and report and filling it out. Be sure to complete and print out the data table embedded in each lab exercise. The information in this lab activity is very helpful when completing the Virtual Lab Quiz and Worksheet that follow.
 
Virtual Lab
Complete the Virtual Lab Activity by Clicking the Link Below:
Virtual Lab Activity: Classifying Arthropods


Study Help

 
It's time to review and practice what you have learned from your reading and instruction activities. Slide presentations, Chapter Outlines, Flashcards, and Student Learning Outcomes are provided to help you study. Feel free to open your book and notes as you use them.
 
Slide Presentation
Log-in to BlackBoard, navigate to the Textbook Reading Folder, click into the Reading Review Slide Presentation Folder, and click the Slide Presentation Link:
Slide Presentation - Chapter 14 Mader Web Presentation
 
Practice Quiz
Log-in to BlackBoard, navigate to the Textbook Reading Folder, and click the Reading Practice Quiz Link:
Reading Practice Quiz - Chapter 14


Assessing Your Learning

 
It's time to assess what you have learned from your reading and instruction activities. The following reading, animation, virtual lab, and essay quizzes are graded assignments. Feel free to open your book and notes as you work on them. Be sure to submit your work as you complete it. Good luck!
 
Reading Quiz
Log-in to BlackBoard, navigate to the Textbook Reading Folder, and click the Reading Quiz Link:
Reading Quiz - Chapter 14
 
Animation Quiz
Log-in to BlackBoard, navigate to the Animations Folder, and click the Animation Quiz Link:
Animation Quiz - 6
 
Virtual Lab Quiz
Log-in to BlackBoard, navigate to the Virtual Lab Folder, and click on Virtual Lab Quiz Links:
Virtual Lab Quiz and Worksheet - 6
 
Essay Quiz
Log-in to BlackBoard, navigate to the Essay Quiz Folder, and click on the Essay Link:
Essay Quiz - 6



Related Web Sites

 
Here is a website that I like. Click the icon to pursue this topic on the internet:

Have You Met The Objectives For This Lesson?