Fission yeast are single-celled, simple eukaryotes that undergo closed mitosis where the nuclear envelope stays intact throughout division (Upper Figure 1). During mitosis, an actin‑myosin contractile ring (ACR) assembles and constricts, then cytokinesis finishes via septation, where a cell-wall-like structure, the septum, forms between the two daughter cells, separating them completely (Lower Figure 1). Figure 1: Fission Yeast Cell Division … Continue reading Story 1: Fission Yeast