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<blockquote data-quote="TheDarkAngel" data-source="post: 2872964" data-attributes="member: 168336">Omicron - Good answer to AikiMac.AikiMac - To build on Omicron&#039;s answer, consider Flying Squirrels.&nbsp; They have &quot;wings&quot;, but have not needed (yet) to develop the muscular structure to actually power their own flight.&nbsp; They are the in-between stage.&nbsp; Things don&#039;t happen linearly in Evolution.&nbsp; It&#039;s usually a roundabout way.&nbsp; As far as eyes are concerned, they definitely do not get assembled in parts.&nbsp; They would evolve from a more simplistic form.&nbsp; A very rough example - Let&#039;s say some creatures exist with just eyes that are just unfocused balls of jelly that admit just enough light to distinguish rough shapes, without being focused by lenses.&nbsp; Let&#039;s say that genetic mutation causes 1 out of every 1000 creatures to develop a crude lense.&nbsp; This allows the more focused creatures to see predators and prey better, and flourish.&nbsp; They pass on this mutation to their offspring, and after a couple of dozen generations the ratio becomes 10 out of 1000 because these &quot;lensed&quot; creatures are better hunters and survive longer to produce more offspring.&nbsp; A couple hundred more generations, and 900 out of the 1000 creatures have developed lenses.&nbsp; Evolution at work.&nbsp; The same thing can happen throughout the body.&nbsp; Vestigial organs and limbs are found all over the spectrum, showing organs or limbs being slowly discarded as useless by evolution.Keep in mind, that example is very simplistic, and doesn&#039;t adress a lot of the more complicated processes that happen, but it should give you a good idea on how it all works.Edit: Some small spelling errors corrected.</blockquote>

[QUOTE="TheDarkAngel, post: 2872964, member: 168336"] Omicron - Good answer to AikiMac. AikiMac - To build on Omicron's answer, consider Flying Squirrels. They have "wings", but have not needed (yet) to develop the muscular structure to actually power their own flight. They are the in-between stage. Things don't happen linearly in Evolution. It's usually a roundabout way. As far as eyes are concerned, they definitely do not get assembled in parts. They would evolve from a more simplistic form. A very rough example - Let's say some creatures exist with just eyes that are just unfocused balls of jelly that admit just enough light to distinguish rough shapes, without being focused by lenses. Let's say that genetic mutation causes 1 out of every 1000 creatures to develop a crude lense. This allows the more focused creatures to see predators and prey better, and flourish. They pass on this mutation to their offspring, and after a couple of dozen generations the ratio becomes 10 out of 1000 because these "lensed" creatures are better hunters and survive longer to produce more offspring. A couple hundred more generations, and 900 out of the 1000 creatures have developed lenses. Evolution at work. The same thing can happen throughout the body. Vestigial organs and limbs are found all over the spectrum, showing organs or limbs being slowly discarded as useless by evolution. Keep in mind, that example is very simplistic, and doesn't adress a lot of the more complicated processes that happen, but it should give you a good idea on how it all works. Edit: Some small spelling errors corrected. [/QUOTE]

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