Very good. what we have here are attempts to conflate a dynamic process (evolution) with a specific history (biogenesis, common descent).
The specific history of life on earth seems to be common descent from a population of single celled organisms.
Evolution is a dynamic process, and does not require or demand common descent. It could very well be that millions of abiogenic events occurred, and all but one lineage was killed off or consumed by the victorious lineage.
Lineage in single celled organisms is a dubious concept. These guys can acquire DNA from individuals of different types. There are no species as we think of species in sexually reproducing organisms. You catch a cold, you've been laid.
Actually, it takes a second step to sever the process from the causative agent. You don't mean to say that the properties of matter are independent of the matter that exhibits these properties?