Fig. 3

Maximum likelihood (ML) tree inferred from the 44-taxon alignment (1,595 unambiguously aligned amino acids) of concatenated plastid genes PsaA, PsbC, and AtpA using the PROTGAMMA model in RaxML. Bootstrap support values 65 or higher and Bayesian posterior probabilities are listed above each branch. The inset depicts a differential image contrast (DIC) micrograph of the pseudocolony of Polykrikos lebouriae used for single-cell transcriptomics; this cell was undergoing mitosis when the image was captured (scale bar = 10 μm)