Wisdom Teeth: Possible function?

Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter25: The Origin Of Life
Section: Chapter Questions
Problem 8TYK
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Wisdom Teeth: Possible function?
You have now studied three different types of anatomical structures:
• Homologous structures show individual variations on a common anatomical theme. These are seen in
organisms that are closely related.
1. Give an example of a homologous structure from this activity: 48
• Analogous structures have very different anatomies but similar functions. These are seen in organisms
that are not necessarily closely related, but live in similar environments and have similar adaptations.
2. Give an example of an analogous structure from this activity: 49
• Vestigial structures are anatomical remnants that were important in the organism's ancestors, but are
no longer used in the same way.
3. Give an example of a vestigial structure from this activity:
4. Below are some vestigial structures found in humans. For each, hypothesize what its function may have
been.
Structure
Possible function?
50
Wisdom teeth
Appendix
51
Muscles for moving the ear
52
Body hair
53
54
Little toe
55
Tailbone
56. How are vestigial structures an example of evidence of evolution?
Transcribed Image Text:You have now studied three different types of anatomical structures: • Homologous structures show individual variations on a common anatomical theme. These are seen in organisms that are closely related. 1. Give an example of a homologous structure from this activity: 48 • Analogous structures have very different anatomies but similar functions. These are seen in organisms that are not necessarily closely related, but live in similar environments and have similar adaptations. 2. Give an example of an analogous structure from this activity: 49 • Vestigial structures are anatomical remnants that were important in the organism's ancestors, but are no longer used in the same way. 3. Give an example of a vestigial structure from this activity: 4. Below are some vestigial structures found in humans. For each, hypothesize what its function may have been. Structure Possible function? 50 Wisdom teeth Appendix 51 Muscles for moving the ear 52 Body hair 53 54 Little toe 55 Tailbone 56. How are vestigial structures an example of evidence of evolution?
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