[PatrickHenry]

What I was asking was; How do we know the genetic differences in individuals will change the DNA of apes into the DNA of humans given enough time?

There is evidence that it did happen.

Human Ancestors.
The Evidence for Human Evolution.
Comparison of all Hominid skulls.
Early Human Phylogeny. Relationships among early human species.
Man-chimp evolution. Ichneumon's post 29.
Brain gene shows dramatic difference from chimp to human.

An examination of the DNA shows the changes that occurred. It's like a detective story. You look for clues about the past.

[onja]

Thanks. I'll read those links.