Meiosis, Fertilization & Heredity

Sixty questions drawn evenly from all four blocks. Tap an answer and it moves on by itself — correct answers advance immediately, misses hold a few seconds so you can read why. Each run draws a fresh, balanced set, so it is worth taking more than once.

Four rules carry this whole unit Two cells = mitosis, four = meiosis · one cell in the picture = Meiosis I · 46 → 23 → 46 · count the chromosomes.

7.1Meiosis and the mitosis comparison

7.2The order of meiosis I and II

7.3Fertilization, sexual and asexual

7.4Nondisjunction and karyotypes

Meiosis, Fertilization & Heredity

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