Gene Allele Simulation Tool
Explore genetic inheritance using interactive Punnett squares
Parent 1
Parent 2
Punnett Square
Y
y
Y
YY
Yellow
Yy
Yellow
y
Yy
Yellow
yy
Green
Understanding the Results
Dominant Traits
Traits that appear when at least one dominant allele is present. Represented by capital letters.
Recessive Traits
Traits that only appear when both alleles are recessive. Represented by lowercase letters.