A model diploid cell with 2n=4 enters mitosis after S phase. Condensed chromosomes attach to spindle fibers, align at metaphase, separate at anaphase and form daughter nuclei during cytokinesis.
• 3D scene parts: Cell boundary and cleavage furrow; chromosomes / sister chromatids; spindle fibers; centrosomes / spindle poles; daughter nuclear envelopes. • Controls: Duration per phase (2–8 playback s); Unattached kinetochore / checkpoint hold. • Live readouts: Operating phase index; Chromosomes in undivided cell; Total DNA content (C); Completed daughter cells. • Guided experiments: Checkpoint hold; Slow phase tour. • Four tabs (visual laboratory, curves and measurements, experiments, learn and assess), a model-verification run, a timestamped event log and a trial report.
Before separation: 4 chromosomes, 8 chromatids, total DNA 4C Anaphase undivided cell: 8 chromosomes, total DNA 4C After cytokinesis: two cells, each 4 chromosomes and DNA 2C
Molecular geometry, organelle dimensions and animation time are enlarged and illustrative. Colors identify structures rather than natural tissue color. This is a conceptual teaching model, not a cell physiology predictor. S phase precedes the displayed mitosis. A simplified checkpoint holds metaphase when enabled; chromosome attachment geometry and mechanical force are illustrative. Try the preset experiments, then compare the live readouts with the equations.
No. Geometry is enlarged and time is a teaching playback scale.
S phase before mitosis.
Molecular geometry, organelle dimensions and animation time are enlarged and illustrative. Colors identify structures rather than natural tissue color. This is a conceptual teaching model, not a cell physiology predictor. S phase precedes the displayed mitosis. A simplified checkpoint holds metaphase when enabled; chromosome attachment geometry and mechanical force are illustrative.