Holiday in Saint Gallen – Saint Gallen Travel for We are genetically constrained to grow legs and arms rather than fins, wheels, or wings. That explains why humans walk or run to get places. But that does not mean that we should never swim, ride bicycles, or fly in airplanes. Humans are also genetically induced, owing to their bodies’ production of certain hormones and enzymes, to respond aggressively in threatening situations. Nonetheless, culture and politics frequently curb, manipulate, and sublimate these aggressive tendencies, and rightly so. Likewise, the fact that genetics has produced a historical legacy of female childrearing does not mean that women should remain the sole or even primary caretakers of children today. All cultural institutions, one might say, have genetic foundations. Holiday in Saint Gallen – Saint Gallen Travel 2016.