Saturday, February 5, 2011

One More Example of Lightning -fast Evolution!


Dr. Palmer, I found an article that relates to the discussion we had in class today about rapid evolutions. This article is about lizards that were put into a new habitat and evolved drastically in just 36 years. The lizards head was morphed because of the adaptation to new food sources. The lizards went from eating bugs to plants. This cause wider, longer and taller head structures, which in turn translated into stronger biting force. Research even revealed that new structures formed in the lizard's digestive tracts, to help that digest their new food source, that were never before associated witht this species of lizard. The lizards also evolved in their behavior. They gave up defending territories and travel around more, the population also increased dramatically due to the unending amount of food source.
 http://www.sciencedaily.com/releases/2008/04/080417112433.htm

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