Nondisjunction Simulator
Toggle where nondisjunction occurs and watch how it changes the chromosome count — and identity — of the resulting gametes.
Normal meiosis
Nondisjunction at Meiosis I
Nondisjunction at Meiosis II
Gametes (after Meiosis II)
Homolog 1 (either chromatid)
Homolog 2 (either chromatid)