Each parent passes one allele of each gene. A Punnett square predicts the odds for their children. Set the parents and watch the ratios change. (Example: B = brown eyes, dominant · b = blue, recessive.)
Punnett square
Inheritancepredicting the odds
Parent 1
Parent 2
—brown eyes (B_)
—blue eyes (bb)
📷 Reference image
A real labeled figure to compare with the interactive above.
Inheritance — OpenStax, CC BY 3.0 (via Wikimedia Commons)