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'''Vestigial structures''' are those [[anatomy|anatomical]] structures which have no discernible function, or are greatly reduced, in their present form in modern [[species]], but may have had a function in that species' [[ancestor]]s.<ref>http://medical-dictionary.thefreedictionary.com/Vestigial+structure</ref>

'''Vestigial structures''' are those [[anatomy|anatomical]] structures which have no discernible function, or are greatly reduced, in their present form in modern [[species]], but may have had a function in that species' [[ancestor]]s.<ref>http://medical-dictionary.thefreedictionary.com/Vestigial+structure</ref>

Examples of structures claimed to be vestigial include, but are not limited to, the [[human]] [[appendix]]<ref>http://www.talkorigins.org/faqs/vestiges/appendix.html</ref><ref>http://www.medterms.com/script/main/art.asp?articlekey=11555</ref>, 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>

Examples of structures claimed to be vestigial include, but are not limited to, the [[human]] [[appendix]]<ref>http://www.talkorigins.org/faqs/vestiges/appendix.html</ref><ref>http://www.medterms.com/script/main/art.asp?articlekey=11555</ref>, 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>

In the view of secular evolutionists, vestigial structures are some of the best evidence in favor of [[evolution]] and against [[Intelligent Design]] because they believe they are explained by [[natural selection]], but it is difficult to justify why an intelligent [[creator]] would include seemingly useless structures in the design of [[organism]]s.

In the view of secular evolutionists, vestigial structures are some of the best evidence in favor of [[evolution]] and against [[Intelligent Design]] because they believe they are explained by [[natural selection]], but it is difficult to justify why an intelligent [[creator]] would include seemingly useless structures in the design of [[organism]]s.

Proponents of a creation or intelligent design model point out that this argument, in claiming to know what the Creator would do, is not a scientific argument, but a theological one, yet evolutionists often criticize creationists for using theological arguments against evolution.

Proponents of a creation or intelligent design model point out that this argument, in claiming to know what the Creator would do, is not a scientific argument, but a theological one, yet evolutionists often criticize creationists for using theological arguments against evolution.