11. The process of secondary endosymbiosis left its evolutionary signature within the unique topography of plastid membranes. 12. One imagines primitive eukaryotic cells taking up cyanobacteria as intracellular symbionts in a process known as endosymbiosis . 13. Melkonian studied the structure, function and development of the endosymbiosis independent of the origin of plastids. 14. These phyla are not closely related showing that the capability of endosymbiosis with fungi is widely spread. 15. This event is called " endosymbiosis ", or " cell living inside another cell ". 16. The chloroplasts originate via endosymbiosis by engulfment of a photosynthetic cyanobacterium by the eukaryotic, already mitochondriate cell. 17. Biologists commonly agree that chloroplasts found in eukaryotes have their ancestry in cyanobacteria, via a process called endosymbiosis . 18. Cavalier-Smith has published extensively on the nucleus, mitochondria ), genome size evolution, and endosymbiosis . 19. Plants and algae have plastidal aldolase, sometimes a relic of endosymbiosis , in addition to the usual cytosolic aldolase. 20. Based on results to date, alternative evolutionary scenarios to a single primary endosymbiosis is not possible to confirm or refute.
