- Feb 4, 2006
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Here's the thing: there is no end result. Like I said, the process is ongoing. You can have plenty of changes that don't further the large change. Your mammal can eventually grow wings while changing eye or fur color.
There is no plan that the process is working towards. Whichever little changes improve the chances for reproduction will become more common in the population, the ones that are harmful will be weeded out, and the neutral ones will linger on. A mammal might go from arms to gliders to fully functional wings over many tiny steps, with each tiny step working just a bit better in whatever environment the mammal is in. There is no plan to end up flying, and another population might develop different changes that work just as well.
So each tiny step requires a change in the environment?
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