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Index to Creationist Claims,  edited by Mark Isaak,    Copyright © 2004
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Claim CI141.1:

Similarity of structures in different life forms reflects the fact that they were created for similar purposes. Different structures reflect different functions.


Morris, Henry M., 1974. Scientific Creationism, Green Forest, AR: Master Books, p. 70.


  1. Actual known designers use similar forms for similar functions and different forms for different functions. In life, we often see different forms for similar functions (e.g., different designs for bird, bat, and pterodactyl wings) and similar forms for different functions (e.g., spider webs for trapping flying insects, reinforcing tunnels, protecting eggs, transferring sperm, ballooning, marking a trail, serving as a safety line after jumping to escape a threat, and detecting motion).

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created 2003-5-23