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Patterns of biological evolution (view source)
Revision as of 14:28, May 23, 2007
, 14:28, May 23, 2007→Convergent Evolution: Add introductory explanation and creationist view.
==Convergent Evolution==
==Convergent Evolution==
Convergent evolution<ref> http://www.pbs.org/wgbh/evolution/library/01/4/l_014_01.html</ref> causes difficulties in fields of study such as comparative anatomy. Convergent evolution takes place when species of different ancestry begin to share analogous traits because of a shared environment or other selection pressure. Environmental circumstances that require similar developmental or structural alterations for the purposes of adaptation can lead to convergent evolution even though the species differ in descent. These adaptation similarities that arise as a result of the same selective pressures can be misleading to scientists studying the natural evolution of a species. Convergent evolution also creates problems for paleontologists using evolutionary patterns in taxonomy, or the categorization and classification of various organisms based on relatedness. It often leads to incorrect relationships and false evolutionary predictions.
Convergent evolution<ref>http://www.pbs.org/wgbh/evolution/library/01/4/l_014_01.html</ref> is where creatures are believed to have independently evolved similar features. Convergence causes difficulties in fields of study such as comparative anatomy. Convergent evolution takes place when species of different ancestry begin to share analogous traits because of a shared environment or other selection pressure. Environmental circumstances that require similar developmental or structural alterations for the purposes of adaptation are thought to lead to convergent evolution even though the species differ in descent. These adaptation similarities that arise as a result of the same selective pressures can be misleading to scientists studying the natural evolution of a species. Convergent evolution also creates problems for paleontologists using evolutionary patterns in taxonomy, or the categorization and classification of various organisms based on relatedness. It often leads to incorrect relationships and false evolutionary predictions.
Creationists claim that convergence is merely an rationalization for evidence that contradicts divergence.<ref>Truman, Royal, [http://www.creationontheweb.com/content/view/1824 Dare to question the materialist high priests] ''Journal of Creation'' 15(1):34–38, April 2001.</ref>
===Examples of Convergent Evolution===
===Examples of Convergent Evolution===