Which of the following is NOT a vestigial org | vedclass

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(B) Vestigial organs are anatomical structures that have lost most or all of their ancestral function in a species through evolution.$A$. The caecum (

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Finger nails

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(B) Vestigial organs are anatomical structures that have lost most or all of their ancestral function in a species through evolution.$A$. The caecum (specifically the vermiform appendix) is a well-known vestigial organ in humans.$B$. Finger nails are functional structures used for protection and manipulation of objects; they are not vestigial.$C$. Third molars,or wisdom teeth,are considered vestigial as they are often impacted or lack space to erupt due to the reduction in human jaw size.$D$. Abdominal segmental muscles are considered vestigial remnants of the ancestral body wall musculature.Therefore,finger nails are the only non-vestigial structure listed.

Which of the following is $NOT$ a vestigial organ in humans?

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