Make Punnett squares click.
A deploy-ready genetics trainer where students build gametes, complete crosses, catch mistakes, and connect expected ratios to simulated offspring.
Gamete Builder
Drag each gamete button into the correct parent box, then check your answer.
Gamete buttons
Parent 1 gametes
Parent 2 gametes
Punnett Square Practice
Students can type answers into each cell. Use “Check square” to give instant feedback.
Expected ratios
Genotype and phenotype ratios are calculated from the Punnett square outcomes.
Genotype ratio
Phenotype ratio
Error Finder
This mode intentionally creates one wrong cell. Click the incorrect cell, then check your answer.
Drosophila offspring preview
A tiny visual simulator that turns expected outcomes into a fly population. Great bridge into your Drosophila Cross Simulator.
Instructor note
This trainer is designed as a warm-up before full genetic simulations: students first identify gametes, then combine them, then interpret ratios, then see why observed offspring can deviate from expectation. It is intentionally simple, visual, and a little bit mischievous.
