So: IF everything is to Genetics [NOTE: it's not] AND the
   sources for such things identified in the OP have had their
   genetic components decisively identified [NOTE: they haven't and
   won't ever be] THEN what should the social response be? a)
   Establish a norm b) If a norm is not possible, STOP. or a)
   Establish a norm b) Those deviating from the norm should get
   sympathy and social support services.