🧬 Mendelian Genetics — 2D Punnett Square
Monohybrid · Dihybrid · ABO codominance · Hardy–Weinberg equilibrium
Cross type
Monohybrid
Dihybrid
Hardy–Weinberg
Trait
Flower colour (P × p)
Plant height (T × t)
Eye colour (B × b)
ABO blood type (IA IB i)
Custom (A × a)
Parent 1 genotype
Parent 2 genotype
Allele frequency p (dominant) —
0.70
Population size N —
1000
H–W equilibrium: p² (homozygous dominant) + 2pq (heterozygous) + q² (homozygous recessive) = 1. Assumes random mating, no mutation/selection/drift/migration.
Run cross
Simulate 200
Reset
Offspring ratios
Controls