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  2. Vestigiality - Wikipedia

    en.wikipedia.org/wiki/Vestigiality

    In humans, the vermiform appendix is sometimes called a vestigial structure as it has lost much of its ancestral digestive function.. Vestigiality is the retention, during the process of evolution, of genetically determined structures or attributes that have lost some or all of the ancestral function in a given species. [1]

  3. Human vestigiality - Wikipedia

    en.wikipedia.org/wiki/Human_vestigiality

    Arrows show the vestigial structure called Darwin's tubercle. In the context of human evolution, vestigiality involves those traits occurring in humans that have lost all or most of their original function through evolution. Although structures called vestigial often appear functionless, they may retain lesser functions or develop minor new ones.

  4. Appendix (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Appendix_(anatomy)

    The cecum is a pouch-like structure of the large intestine, located at the junction of the small and the large intestines. The term "vermiform" comes from Latin and means "worm-shaped". The appendix was once considered a vestigial organ, but this view has changed since the early 2000s.

  5. Evidence of common descent - Wikipedia

    en.wikipedia.org/wiki/Evidence_of_common_descent

    Evidence for common descent comes from the existence of vestigial structures. [72] These rudimentary structures are often homologous to structures that correspond in related or ancestral species. A wide range of structures exist such as mutated and non-functioning genes, parts of a flower, muscles, organs, and even behaviors.

  6. Introduction to evolution - Wikipedia

    en.wikipedia.org/wiki/Introduction_to_evolution

    Such is the case in whales, which have small vestigial bones that appear to be remnants of the leg bones of their ancestors which walked on land. [53] Humans also have vestigial structures, including the ear muscles, the wisdom teeth, the appendix, the tail bone, body hair (including goose bumps), and the semilunar fold in the corner of the eye ...

  7. Vestigial response - Wikipedia

    en.wikipedia.org/wiki/Vestigial_response

    A vestigial response or vestigial reflex in a species is a response that has lost its original function. In humans, vestigial responses include ear perking, goose bumps and the hypnic jerk . In humans

  8. Robert Wiedersheim - Wikipedia

    en.wikipedia.org/wiki/Robert_Wiedersheim

    The young Robert Ernst Eduard Wiedersheim, probably in early 1874 by Alfredo Noack in Genoa. [1]Robert Ernst Eduard Wiedersheim (21 April 1848 – 12 July 1923) was a German anatomist who is famous for publishing a list of 86 "vestigial organs" in his book The Structure of Man: An Index to His Past History.

  9. Atavism - Wikipedia

    en.wikipedia.org/wiki/Atavism

    [1] [2] In biology , an atavism is a modification of a biological structure whereby an ancestral genetic trait reappears after having been lost through evolutionary change in previous generations. [ 3 ]

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