REPLICATION COORDINATION. “Because the growth rate of free-living Synechococcus (6–12 h doubling time) far exceeds the growth rate of testate amoebas (1–3 d doubling time), the imposition of such control is presumably an early and critical event in establishing any endosymbiotic relationship, preventing the engulfed bacterium from overwhelming the host cell, and it was presumably quickly established during the protoeukaryote’s acquisition of protomitochondria and protochloroplasts.”
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