@rosborne979,
I'm implying that to be one possibility, amongst two or three, and that does not include evolution which I view as mathematically impossible. One possibility not to be overlooked is that prior to the flood, the more advanced creatures of the Earth were able to somehow or other modify their OWN morphology from one generation to the next. That's what Gunnar Heinsohn's studies of Neanderthals would suggest.
One other thing I note is that any sort of a life from space thesis is basically just kicking the can a block or two down the road as far as evolution. The laws of mathematics and probability work the same way everywhere else in the universe as they do here.