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🪰 Drosophila Population Generator and χ² Test Simulator

Generate Drosophila populations, perform genetic crosses, and use chi-square tests to evaluate hypotheses of independent assortment.

Teaching note: The three genes are X-linked. Recombination is simulated during female meiosis; males transmit either their X chromosome or Y chromosome.

3. Select parents and cross

Selected female ♀

None yet

Selected male ♂

None yet

Population

No population yet
No flies yet.
Click Generate wild population.

Population summary

Phenotype counts

Genotype counts

4. Chi-square test for independent assortment

Choose a pair of traits from the active bottle. Enter expected ratios for the four phenotype classes. For independent assortment, students often test 1 : 1 : 1 : 1 or another ratio predicted from their selected parents.

Dr. Andres Posso-Terranova. 2026. ©