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Patterns of biological evolution (view source)
Revision as of 13:14, November 3, 2007
, 13:14, November 3, 2007Creationist explanation
Parallel speciation is a type of parallel evolution in which reproductive incompatibility in closely related populations is determined by traits that independently evolve due to adaptation to differing environments. These distinct populations are reproductively incompatible and only populations that live in similar environmental conditions are less likely to become reproductively isolated. In this way, parallel speciation suggests that there is good evidence for natural selective pressures leading to speciation, especially since reproductive incompatibility between to related populations is correlated with differing environmental conditions rather than geographical or genetic distances.
Parallel speciation is a type of parallel evolution in which reproductive incompatibility in closely related populations is determined by traits that independently evolve due to adaptation to differing environments. These distinct populations are reproductively incompatible and only populations that live in similar environmental conditions are less likely to become reproductively isolated. In this way, parallel speciation suggests that there is good evidence for natural selective pressures leading to speciation, especially since reproductive incompatibility between to related populations is correlated with differing environmental conditions rather than geographical or genetic distances.
== Creationist explanation ==
All three types of evolution presume that evolution has actually occurred, but this basic premise is disputed by creationary scientists, who point out that a vital requirement of evolution—the generation of new genetic [[information]]—has never been observed and is even contrary to observations that show that genetic information is only ever lost through mutations.
Furthermore, they argue that convergent and parallel evolution are nothing more than attempts to explain evidence that doesn't fit the standard evolutionary story of a diverging "family tree" of living things.
{{QuoteBox|As Walter ReMine points out so clearly, the evolutionist has a seemingly endless smorgasbord of stories which can be used ''post-facto''. If organisms not related by a phylogenic evolutionary tree show dramatically similar features one reads this is due to ‘evolutionary convergence’. However, if organisms in very similar environments fail to display apparent similarities, convergence had not occurred. Such rationalizations are free of substance and an inadequate substitute for hard evidence.<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>}}
==See Also==
==See Also==
* [[Theory of Evolution]]
* [[Macroevolution]]
* [[Microevolution]]
== Bibliography ==
== Bibliography ==