The development from which ever abiogenicEither way, however the posits go, you can't have evolution without whatever was supposed to happen at abiogenesis. Then you have to wonder which abiogenesis led to plants, which led to animals, etc. The theory no longer makes real sense to me. Unreal sense maybe. But not real sense.
mechanism occurred is too complex for me
to address in the time I have. If you want
to understand the whole field, you can find
much material on the internet.