I have had 3 different answers to this. some say mold, some say bacteria, and some say no first organism. So science really doesn't know. My last post said why I think the start to life is impossible without creation. But lets get on to evolution, lets start at a single cell. Becasue science doesn't really know where to start. So we have a single cell, without DNA. So what happen with this single cell when it starts to evolve?