| Measure | Value |
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Model: a Wright-Fisher population of N diploid individuals with non-overlapping generations. Each generation, selection (relative fitness = 1 − s for each genotype), then one-way migration from a source population, then mutation from A to a, then random sampling of 2N alleles to form the next generation (genetic drift). Mating is random. Mutation rates are set far higher than real rates (about 10−5) so their effect is visible. Each panel shows up to 60 individuals; when N is larger, the 60 dots are a sample in the right proportions.
Problems are randomly generated and assume Hardy-Weinberg conditions unless the question tests them. Frequencies can be typed as a decimal (0.04), a percent (4%), a fraction (1/25) or "1 in 25". Answers within about 2% of the exact value are accepted, so rounding is fine. Chi-square answers are accepted within about 0.05 or 2%.
Your job
Drag a card onto a box, or tap a card and then tap the box's name. Cards are buttons, so Tab and Enter work too.
Teaching scenarios built on published patterns, simplified. Maps are schematic and not to scale. Not medical advice; real genetic counselling uses much more information.
Wrong picks are fine here. Each one tells you why.