A hypothetic scheme for evolution of probionts.
D005075:Biological Evolution; D055598:Chemical Phenomena; D002621:Chemistry; D003102:Colloids; D004777:Environment; D055593:Geological Phenomena; D005844:Geology; D046911:Macromolecular Substances; D008954:Models, Biological; D008967:Molecular Biology; D009696:Nucleic Acids; D000069497:Origin of Life; D010271:Parasites; D011506:Proteins; D013559:Symbiosis; D014466:Ultraviolet Rays; D014780:Viruses
D003102:Colloids; D046911:Macromolecular Substances; D009696:Nucleic Acids; D011506:Proteins