LIFE SCIENCE

Detailed explanation-1: -A vestigial structure in one organism can be defined as a reduced form of a functional structure in another organism. Natural selection is based on the concepts of excess reproduction, variation, inheritance, and the advantages of certain traits.

Detailed explanation-2: -Vestigial structures are features that are reduced forms of functional structures in other organisms. Vestigial structures are reduced when structures are no longer needed. The structures become smaller over time and might eventually disappear.

Detailed explanation-3: -Vestigial Structures Evolution has reduced their size because the structures are no longer used. The human appendix is another example of a vestigial structure.

Detailed explanation-4: -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.