AP BIOLOGY

Detailed explanation-1: -Many people who develop them find that they do not have enough space in their oral cavity to accommodate a third set of molars. In modern times, wisdom teeth have become largely regarded as being vestigial structures (unnecessary parts of the human body, like the appendix).

Detailed explanation-2: -Charles Darwin listed a number of putative human vestigial features, which he termed rudimentary, in The Descent of Man (1871). These included the muscles of the ear; wisdom teeth; the appendix; the tail bone; body hair; and the semilunar fold in the corner of the eye.

Detailed explanation-3: -My patients often ask me why we have wisdom teeth since they usually need to be removed. The answer is, they are vestigial organs-things that we still have from our ancestors that we no longer need or use. As we evolved, our jaws have shortened and therefore most of us no longer have the room for these teeth.