Choose the physical traits for each alien parent. Each trait has a dominant and recessive version. You'll assign their genotypes in the next step.
♂ MALE ALIEN — ZAX-9
♀ FEMALE ALIEN — LYRA-7
🔬 Step 2 — Assign Genotypes
Each trait is controlled by one gene with two alleles. Capital letters = Dominant (D), lowercase = recessive (r). Choose whether each parent is homozygous dominant (DD), heterozygous (Dd), or homozygous recessive (dd).
Trait
Gene Letter
Dominant (D) phenotype
Recessive (r) phenotype
♂ ZAX-9 Genotypes
♀ LYRA-7 Genotypes
📐 Step 3 — Punnett Square Analysis
Each Punnett square shows the possible genotype combinations for one trait. Dominant phenotype = any cell with at least one capital allele. Recessive phenotype = both alleles lowercase.
👾 Step 4 — Offspring Predictions
Below are the 4 possible offspring based on all trait combinations. Each inherits one allele from each parent. Dominant alleles mask recessive ones.