How did the tear duct , come about by the process of evolution?

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Offline Alan McDougall

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It might seem an odd question, but how did the tear duct , come about by the process of evolution?

Both the eye and nose benefit due to the tunnel between them, namely the tear duct.

I am not suggesting we go down the very rocky path of intelligent design, keep it scientific!
The Truth remains the Truth regardless of our beliefs or opinions the Truth is always the Truth even if we know it or do not know it (The Truth remains the Truth)

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Offline RD

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A reservoir could have formed in a similar fashion to the eye ...


http://en.wikipedia.org/wiki/Evolution_of_the_eye

first a flat patch (a) which secretes , which is improved by becoming a depression (b) , then better still by becoming a chamber (c). 

Alternatively a tube forming like a nostril ... http://youtu.be/wFY_KPFS3LA?t=32s
« Last Edit: 07/01/2014 01:44:41 by RD »