Title page for ETD etd-6797-111852


Type of Document Master's Thesis
Author Rudnick, David Jr.
Author's Email Address drudnic@emory.edu
URN etd-6797-111852
Title Hyperadaptation - Another Missing Term in the Science of Form
Degree Master of Arts
Department Philosophy
Advisory Committee
Advisor Name Title
Hardcastle, Gary L.
Hardcastle, Valerie Gray
Burian, Richard M. Committee Chair
Keywords
  • evolutionary biology
  • exaptation
  • adaptation
  • hyperadaptation
  • corneal endothelium
Date of Defense 1997-04-28
Availability unrestricted
Abstract
In a 1982 paper, Gould and Vrba argue that a conflation of the two components of adaptation of a feature, historical development of the feature and present utility, has caused evolutionists to overlook a missing term in the science of form, which they call 'exaptation'. In the present project, I show that evolutionary biology still contains a confusion in the use of 'adaptation' due to an inappropriate perception of the interaction between the two components of adaptation. Because of the confusion, evolutionists have missed another term in the science of form. Evolutionary theory, specifically the treatment of adaptation, would profit from the introduction of a term referring to features that have a selective history which causes them to appear overly well adapted to their present function. I suggest we refer to these features as hyperadaptations, since they appear to be hyperbolized adaptations. By introducing hyperadaptation into the conceptual framework of adaptation, we can sharpen our understanding of related concepts (adaptation to function, exaptation, maladaptation, etc.) and remove or reduce some confusion regarding the interplay between analysis of historical pathways and ascriptions of (current) function in the diagnosis of adaptation. Furthermore, the improved framework should allow evolutionists to more adequately explain biological phenomena.
Files
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