Diya blinks as if in momentary puzzlement -- and then she laughs, just the slightest sound, but it makes the CMO turn his head in slight alarm.

"Oh, no, I don't think you quite understand. It's nothing so direct as that. The human genome is extraordinarily versatile. A single Cetagandan could accomplish any number of things, and exceptionally well, although I suppose among the ghem, on the clan level some parents may be inclined to select for some traits over others in their individual progeny. But one need not be so narrow in vision. The propagation of our people as a whole is by an entirely different design."