All living organisms share the same “core” makeup. That is why the embryo’s have similar features. We all share the same core cell structure, function and body plan organization. This is all right there from the very beginning. This is the potentiality.
Now it gets really neat!

The regulatory system can rearrange things to allow variable offspring. Micro evolution (adaptability) is built right in. What does this mean? The things that control this have to be in place before micro-evolution can take place. Bye Bye Darwin! The top evo guys get this but still have not come to terms with it. They cannot explain saltations away and now know the first cells were complex. The typical evo defender on CAF doesn’t even know this exists. Why - 'because of what their boilogy classes taught them. You know the one’s I am talking about - the one’s that every time you question the modern synthesis they reply - take a university biology course.
The kicker is it fits so nicely with St Augustine’s idea of potentiality and the constant teaching and understanding of the Church.
The payoff is that it pays to stick with this thought - Divine Revelation Trumps!

I have always maintained Divine Revelation must illuminate out reasoning.
Humans never needed a tail for mobility and now you can see why. We will be better able to define the “kinds”. This also puts the idea of devolution into play. That the corruption brought upon us by the fall corrupts the “pure potentiality” that existed in the beginning. We also see this preserved in the “kinds” we identify this way - a dog is a dog, a cat is a cat no matter there breeding or adaptations. Their core is conserved. The first humans had everything necessary to populate the earth as long as they followed God’s instruction of “do not murder”.
The gene mutations we see today were not there in the beginning. These came later.
And finally - God made all things good.