Sunday, February 26, 2012

For all the lefties out there...

I was doing some research on frequency dependent selection and I found a really amusing and interesting article relating frequency dependent selection to the persistence of left handedness in humans! After many articles about butterflies this was a find!
Reminded me of you all and thought you might want to read it to:
http://www.jstor.org/stable/10.2307/50649

TL;DR: Basically the left handedness trait has been consistent at 10& since neolithic times. Scientists now think that this is an example of negative frequency dependent selection. The rare lefties have a slight fitness advantage in combat but only while they're percentage remains low. Neat!

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