![]() Muscles that make hair stand up Coccyx (tail bone) Muscles that move ears Wisdom teeth Record your answers in the table Structure Appendix Think about organisms that are closely related to us and the functions they have for those structures (meaning other mammals or specifically other primates). Suggest a possible function for each structure and explain why it became vestigial (why that adaptation became less important for survival). It is believed that the human appendix, wisdom teeth and tail bone are vestigial structures, because they are diminished in size or usefulness from what they would have been much earlier on in the course of our evolution.Īnalyze the pictures above. A vestigial structure is a structure or organ that through the course of evolution has either diminished in size or usefulness.
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