Activity 3. SOLVE ME! Directions: "Split" the letters of the genotypes for each pure parent and put them outside of the Punnett Square and answer the questions below: In guinea pigs, the allele for short hair is dominant over long hair. Draw a Punnett square inside the box. Guide Questions: 1. What genotype would have a heterozygous short haired guinea pig have? 2. What genotype would a pure breeding short haired guinea pig have? 3. What genotype would a long haired guinea pig have? 4. What percentage of the offspring will have short hair?