vestigial structure

vestigial structure
A structure in an organism that has lost all or most of its original function in the course of evolution, such as human appendixes.

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  • Vestigial — Adjective describing something that is a vestige (remnant) or a primitive structure, and no longer believed to be important. For example, the appendix is considered a vestigial organ, and some infants are born with a vestigial tail. * * *… …   Medical dictionary

  • Vestigial responses — Human Vestigial Response: Ear Perking It has been observed that some people have slight protrusions on the outer ear, also known as the auricle. These protrusions tend towards the top of the auricle. This has been tagged and coined Darwin s… …   Wikipedia

  • Vestigial — Structure vestigiale Pour les articles homonymes, voir Vestige. Une structure vestigiale est une structure anatomique de l organisme d une espèce dont la fonction initiale a été perdue tout ou en partie au cours de l évolution. On peut parler d… …   Wikipédia en Français

  • Structure vestigiale — Pour les articles homonymes, voir Vestige. Une structure vestigiale est une structure anatomique de l organisme d une espèce dont la fonction initiale a été perdue tout ou en partie au cours de l évolution. On peut parler d organes vestigiaux ou… …   Wikipédia en Français

  • vestigial — adj. existing only in a rudimentary form. The term is applied to organs whose structure and function have diminished during the course of evolution until only a rudimentary structure exists …   The new mediacal dictionary

  • vestigial — /vɛsˈtɪdʒəl/ (say ves tijuhl) adjective 1. relating to or of the nature of a vestige. 2. (of an organ or structure) reduced in size, complexity or function, as part of an evolutionary process, as the appendix in humans, the wings of a penguin, or …  

  • Organe vestigial — Structure vestigiale Pour les articles homonymes, voir Vestige. Une structure vestigiale est une structure anatomique de l organisme d une espèce dont la fonction initiale a été perdue tout ou en partie au cours de l évolution. On peut parler d… …   Wikipédia en Français

  • Vestigiality — The human vermiform appendix is a vestigial structure; it no longer retains its original function. Vestigiality describes homologous characters of organisms that have seemingly lost all or most of their original function in a species through… …   Wikipedia

  • Human vestigiality — In the context of human evolution, human vestigiality involves those characters (such as organs or behaviors) occurring in the human species that are considered vestigial in other words having lost all or most of their original function through… …   Wikipedia

  • Natural selection — For other uses, see Natural Selection (disambiguation). Part of a series on Evolutionary Biology …   Wikipedia

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