Genetic Crosses
by Anonymous
Predict an Rr × Rr cross on a Punnett square, then draw offspring and watch the observed ratio approach the theoretical 3 : 1 as the sample grows.
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About this app
Genetic Crosses is an interactive Mendelian genetics learning app based on round and wrinkled pea traits. Explore how RR, Rr, and rr genotypes determine phenotypes, use Punnett squares to predict offspring from different parent combinations, and simulate larger offspring samples to compare observed results with the theoretical 3:1 ratio.
Use cases
- High school biology students learning Mendelian inheritance
- Teachers demonstrating dominant and recessive traits
- Learners practicing Punnett square predictions
- Science classes exploring sampling and genetic ratios
Features
- Interactive comparison of RR, Rr, and rr genotypes
- Phenotype explanations for dominant and recessive pea traits
- Punnett square predictions for selectable parent genotypes
- Examples including Rr × Rr, RR × rr, and Rr × rr crosses
- Adjustable offspring sample sizes for comparing actual and theoretical ratios
- Mission-based activities with reset and next-step controls