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Author Topic: How did the tear duct , come about by the process of evolution?  (Read 1545 times)

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!


 

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 ...
« Last Edit: 07/01/2014 01:44:41 by RD »
 

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