Over at skeptics, there were a couple questions asked as to the correlation of specific physical traits in relation to personality/behaviour. For instance, the simian line as well as red hair. Now, I did my best to answer these questions, with what I understand as there being a long history of people attempting to correlate external physical characteristics with behaviour (see the disgraced "art" of phrenology for instance).
However, in answering the simian line question, I did come across some weak correlations. It got me to wondering if this is an area of exploration in terms of perhaps one gene sequence for a physical trait somehow being tied with another gene sequence for behaviour.
So, do any physical characteristics being expressed through genes correlate to behaviour?
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