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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Emile Vidrine who wrote (232192)	5/10/2005 3:12:35 PM
From: combjelly	Read Replies (1) \| Respond to of 1572932

"We have NO empirical data to move the Darwin's weak evolutionary hypothesis to the credibility of a theory." Sure we do. A major driver of evolution is neoteny, i.e. the retention of early developmental characteristics into later stages of development. That, in combination of natural variation, can give rise to a lot of things. For example, flight in birds, what used to be the big hammer of creationism. Feathers, which have been known to be modified scales, probable covered young dinosaurs so that they could retain body heat and develop faster. They might have also been on adults, it certainly helps explain some of the curious skin structures. Birds probably evolved from a small running dinosaur who had feathers on its forearms. Those that developed a tactic of hopping while it ran could easily have glided, thus conserving energy and possibly gaining speed. This resulted in an advantage over similar dinos, so that characteristic was strengthened over time because natural variation led to individuals who were better at it than others. This, by the way, can be seen in the fossil record...