The Effects of Endosymbiont on Survival

More than half of endosymbiont pairings are metabolically viable, according to a new study. The merged cells were less fit and less evolvable than their normal ancestor cells most of the time. Libby: This means they have a lower potential for diversifying and radiating across the planet. It may help explain why with the exception of eukaryotes there are relatively few prokaryote endosymbolts.