All four races can interbreed. In half-breeds, a mixture of two "pure" strains, or two half-breeds of the same kind, one strain is dominant, while the other contributes a lesser amount. In either case, the half-breed is raised in one culture or the other. Though sometimes they (and possibly their parents) are outcast from both parent's cultures, generally the cultural attitudes of one parent or the other dominate in the half-breed's childhood. Half-breed use the height, weight, and age tables of their dominant strain. Example: The child of the previous two examples is human.