Cell Division: Mitosis & Meiosis Simulator (2D)

This 2D companion drives the same mitosis/meiosis cell cycle as the 3D version through a plain top-down canvas view built for reading the mechanics rather than orbiting a scene: a side panel switches between Mitosis, Meiosis I and Meiosis II, sets how many homologous chromosome pairs the starting cell carries and how fast the spindle cycles through prophase, metaphase, anaphase and telophase, and toggles a visible crossing-over chiasma that links homologous chromosomes during meiosis I prophase — the physical step that shuffles alleles between maternal and paternal chromosomes. A live readout panel tracks the current stage, stage progress, ploidy (2N → N or 2N → 2N), how many daughter cells result and how many full divisions have run, making the difference between mitosis's identical daughters and meiosis's genetically distinct haploid gametes directly countable instead of implied.