So if these populations have not had expansion for a thousand years, 500 hundred years, heck even 200 years, they cannot be intergrades, but are a product of genotype and unstable(changing) habitat.

..and herein lays the rub.

so what you are both saying is you BOTH don't really now.. HA HA HA HA~!
-----
FR quote:
"Doing the same things over and over expecting to learn something else, is the definition of insanity"