Symmetrical Butterfly Wings
Why are butterflies wings symmetrical?
My question to you is what kind of symmetry are you referring
to? If I understand your question correctly, are you
referring to the left wing being a mirror image of the
right? If that is your question, then the answer is that if
the wings were not symmetrical, the butterfly would have a
difficult time flying, since the wing on one side would have
different lift and drag characteristics than the wing on the
other side. Hopefully I have not missed your point!
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Update: June 2012