Let's say, for an animal it is essential to have a long tale, the longer the better. So, the tale is going to get longer in the following generations until it reaches optimal length or environment changes, so long tale is not required anymore. No problem.
But what about eye? It's a very complicated thing. I cannot accept that animal without eyes can have it in the following generation complete and ready. So it will take multiple generations to get from blind predecessors to guys with functioning vision, with ability to distinguish light and darkness at least.
So, generations 'in between' won't have a vision and won't have any evolutionary benefits, instead these unlucky will own a completely useless and redundant system that doesn't work.
So it looks like the mother nature is able to foresee multiple plies in future?
2007-06-30
21:04:59
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3 answers
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asked by
Donald D
2
in
Biology