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.