LIFE SCIENCE

Detailed explanation-1: -With a reduction in human jaw size, molars-particularly the third molars, or wisdom teeth-became highly prone to impaction. Increasingly, wisdom teeth are congenitally absent. As a consequence, they are now considered a vestigial feature of the human body.

Detailed explanation-2: -Wisdom teeth are vestigial (unnecessary) features of our bodies. Wisdom teeth removal has become a rite of passage for many teens and young adults around the globe. But if your wisdom teeth erupt in alignment with your other teeth and don’t cause any problems, you may not need to do anything.

Detailed explanation-3: -In humans, the appendix is a good example of a vestigial organ. This non-functioning organ eventually degenerates, shrinking in size and disappearing ultimately. Examining vestigiality should be governed by drawing similarities with their counterparts with respect to their homologous features.

Detailed explanation-4: -Examples of vestigial structures include the human appendix, the pelvic bone of a snake, and the wings of flightless birds.

Detailed explanation-5: -A vestigial structure is a biological structure that has lost a major ancestral function and is usually drastically reduced in size. Well-known examples include the eyes of blind cave fishes and blind cave salamanders, and the diminutive wings of kiwis and emus.