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Evidence for Evolution - University of Indianapolis
Evidence for Evolution - University of Indianapolis

... –general correspondence between fossil and living forms in same geographical area Darwin used this observation to predict that fossils of ancient humans should be found in Africa ...
Homologous Structures and Speciation
Homologous Structures and Speciation

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The Development of Evolutionary Biology

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Evolution Evidence Review
Evolution Evidence Review

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Evolution Summary Questions

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Chapter 16 —Test A

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File - Mrs. Eggleston

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Darwin part 2
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Bio07_TR_U05_CH15.QXD - BellevilleBiology.com
Bio07_TR_U05_CH15.QXD - BellevilleBiology.com

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Theory of Evolution Reading

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Name - Humble ISD
Name - Humble ISD

... 11. The whale’s flipper and the arms of a human are examples of (vestigial organs or homologous structures) because they have the same bones but use them for different functions. 12. The hip bones in whales and snakes serve no function, so they are examples of (vestigial organs or homologous structu ...
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Vestigiality



Vestigiality refers to genetically determined structures or attributes that have apparently lost most or all of their ancestral function in a given species, but have been retained during the process of evolution. Assessment of the vestigiality must generally rely on comparison with homologous features in related species. The emergence of vestigiality occurs by normal evolutionary processes, typically by loss of function of a feature that is no longer subject to positive selection pressures when it loses its value in a changing environment. The feature may be selected against more urgently when its function becomes definitively harmful. Typical examples of both types occur in the loss of flying capability in island-dwelling species.
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