[G Larry]

I'm under the impression that for something to "evolve" the baby had to be different than the mother.

[VadeRetro]

In sexual species, every baby IS different from the mother. Once again, the refutations of evolution seem to depend upon the refuter not having the tiniest inkling of what evolution is or how it works. The observed differences between parent and child are enough for evolution. It isn't a crocodile mama having an ape baby.

[atlaw]

"I'm under the impression that for something to "evolve" the baby had to be different than the mother."

In rudimentary terms, you are correct. But the mutational "differences" are small and are not necessarily morphologically apparent within one or even many generations. For a very rough analogy (and one that by virtue of human intervention is itself foreshortened), think of the time and the number of generations it takes for humans to selectively breed plants and animals.