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For more information, please see full course syllabus of Life Science
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Lecture Comments (2)

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Post by David Saver on June 6, 2014

ALSO Pelvic bones in whales help the whale during reproduction. These structures are NOT vestigial.

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Post by David Saver on June 6, 2014

The appendix is NOT vestigial, It plays an important role in the immune systems and helps store healthy bacteria.


Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Objectives 0:06
    • Objectives
  • Why Do Some Survive and Other Die? 0:34
    • Species
    • Evolution
  • Charles Darwin 3:19
    • Charles Darwin
  • Evolution 6:36
    • Evolution Overview
    • Vestigial Structures
    • Homologous Structures
  • More Evidence for Evolution 9:30
    • Mimicry
    • Fossils
    • Camouflage
    • Antibiotic-resistant Bacteria
  • Natural Selection 14:28
    • Natural Selection: 'Survival of the Fittest'
    • Example of Natural Selection
  • Example 1: Homologous Structures and the Origin of Species 18:57
  • Example 2: What are Vestigial Structures 20:25
  • Example 3: What Adaptation Helps Organisms to Blend into Their Environment to Protect Them From Predators? 21:24
  • Example 4: How Does This Illustration Depict Evolution? 21:47