Question

The human body contains structures that are needed for survival, or in the case of vestigial structures, were needed for survival. wisdom teeth, seen here, are vestigial third molars. human ancestors had larger jaws with more teeth. over thousands of years, man no longer needed the third molar, and they became the source of dental problems rather than an aid in survival. how does this vestigial structure support the theory of natural selection?

Answer 1

Agriculture and the use of fire changed what and how man ate and the need for these teeth diminished over time. Jaw size and shaped evolved and there was insufficient room for the third molars.