(April 2, 2015 at 8:03 am)C4RM5 Wrote: If evolution is so perfect explain how ancient animals would have survived if they only had part of an eye. You need a whole eye to see.Basically speaking, some cells in very early life forms had a crude ability to detect a change in light intensity. This trait proved useful in avoiding predators and so was passed through DNA, the life forms without these cells died out as they were easier prey.
Each subsequent mutation that led to a more refined ability to detect changes in light patterns (i.e. predators approaching) would be beneficial to the survival of that organism and it would be more likely to reproduce and pass that mutation on.
Repeat for millions of generations and you start to form something you recognise as an eye. The evidence of this is well documented, it's probably the timescale that makes it difficult for you to comprehend.
