Anyone have any thoughts about this?
Its a bit more complex than that.
There are genetic races (based on descent), and there are geographic races (based on living conditions). There is no necessary connection between the two.
Extremely small, dark skinned individuals are found in several areas (Pygmies, Negritoes, etc.). Some of the tribes in the Amazonian rain forests are tending in this direction as well, but have not quite had time to pick up all of the adaptations of the other groups. These specialized traits are geographic in origin, and there is no close genetic relationship among these groups.
In the opposite direction, groups which are relatively closely related genetically can look quite different. An example would be the Pygmies and Watusi of Africa.
Are coyotes and domestic dogs two different races of canines?
Or are domestic dogs several hundred different "races" -- mostly the AKC breeds -- with coyotes being just another breed?