WACE Biology — Unit 3

Punnett Squares — Flashcards & Quiz

Punnett squares are the standard visual tool for predicting offspring genotype and phenotype ratios from a genetic cross. WACE Biology Year 12 Unit 3 expects you to apply them to monohybrid and dihybrid crosses, interpret pedigree charts, and calculate probabilities for specific outcomes. The 3:1 and 9:3:3:1 ratios are recall-essential.

Last updated: March 2026