This One\'s for David (General)

by David Turell , Saturday, January 23, 2010, 19:20 (5416 days ago) @ xeno6696


> The way I see it, natural selection would only allow changes if there was some need to change, ie, change in food, climate, etc. 
> 
> Humans in domestic dogs provide the change in that we're actively selecting for some kind of trait. What the story confirms to me, is that wolves are extremely well adapted; they don't need to change, so they don't. Domesticated dogs have an artificial need to change. 
> 
> Or said another way, you might say that natural selection is too passive, but it is a fitting explanation to why the possible variation displayed by dogs didn't happen in wolves.-You are the one who said it. I firmly believe it. Any evolutionary process based totally on natural selection is entirely passive. It must work on the variety of organisms presented to it, and it must respond to envoironmental changes, only if they appear.