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The Tree of Eukaryotes. The colored groupings correspond to currently defined “supergroups.” Unresolved branching orders among lineages are shown as multifurcations. Broken lines reflect minor uncertainties about the monophyly of certain groups. (1) Unique primary endosymbiosis event; (2) multiple secondary endosymbiosis events identified by Oborník (2019) as “complex endosymbioses.” The tree topology was adapted from Burki et al. (2020).
