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'''Vestigial structures''' are those [[anatomy|anatomical]] structures which have no discernable function in their present form in modern [[species]], but may have had a function in that species' [[ancestor]]s.

'''Vestigial structures''' are those [[anatomy|anatomical]] structures which have no discernable function in their present form in modern [[species]], but may have had a function in that species' [[ancestor]]s.

Examples of vestigial structures include, but are not limited to, the [[human]] [[appendix]], the [[wing]]s of an [[ostrich]], the [[pelvis|pelvic]] bones of a [[whale]], and the [[eye]]s of the [[mole]] and the [[salamander]].<ref>http://www.bookrags.com/research/vestigial-structures-wap/</ref>

Examples of vestigial structures include, but are not limited to, the [[human]] [[appendix]], the [[wing]]s of an [[ostrich]], the [[pelvis|pelvic]] bones of [[whale]]s and [[boa]]s <ref>http://www.1911encyclopedia.org/Boa</ref>, and the [[eye]]s of the [[mole]] and cave-dwelling [[salamander]]s.<ref>http://www.bookrags.com/research/vestigial-structures-wap/</ref>

Vestigial structures are some of the best evidence in favor of [[evolution]] and against [[Intelligent Design]] because they are easily explained by [[natural selection]], but it is very difficult to justify why a supposedly intelligent [[creator]] would include seemingly useless structures in the design of numerous [[organism]]s.

Vestigial structures are some of the best evidence in favor of [[evolution]] and against [[Intelligent Design]] because they are easily explained by [[natural selection]], but it is very difficult to justify why a supposedly intelligent [[creator]] would include seemingly useless structures in the design of numerous [[organism]]s.