R
rossum
Guest
Maybe. We are eukaryotes, with mitochondria in our cells. Those mitochondria were once free-living organisms that were incorporated into our early single-celled ancestors: see here.I thought this was already settled. Help me out:
If all organisms are of the same species with their ‘parents’, then going back to the common ancestor, there can only be one species.
True or false?
Hence it is possible that life originated twice in different parts of the planet, one origin resulting in most of our cell while the other origin resulted in our mitochondria.
Similarly, horizontal gene transfer may mean that our origins are from multiple abiogenesis events which have since exchanged genetic material; buffalo will be happy to explain more on this.