Long term, a populations morphology is ONLY changed by changes in the DNA code. Feral pigs and domestic pigs are not the same, and it was not directly their environment that causes them to be different - but the effect the environment had on the favorability of DNA variations.
A wild pig raised in domestic circumstances looks like a wild pig and a domestic pig raised in the wild looks like a (skinny) domestic pig.
So I repeat (to those of you in Rio Linda)...
“Genetic changes within a population are the only thing that DO result in changes in morphology of a population.”
WRONG. I am not saying the changes will be predetermined and spell out Shakespeare; I am saying that change in DNA is inevitable. You insist there is something that is going to preclude this change, but you don't seem to know what it is.
What is going to stop change in DNA in a population over time if DNA polymerase introduces changes every time it copies it?
I think you might not realize the obligation to provide answers rests on your shoulders.
This is due to the fact that you have made the central claim here—that a quantifiable amount of genetic change will occur in a continuous manner over a specific period.
However, your only support is a mathematical equation derived from observation of change in discrete instances.
So the only true assertion you have made is: if d x 20,000 = 0.01, then d x 2,000,000 = 1. But this does not in any way support the claim that genetic change will occur in a continuous fashion over 2 million years. The statement is provable universally only as a mathematical statement, not as a biological one.