PHENOTYPE ALLELE HETEROZYGOUS HOMOZYGOUS GENOTYPE PUNNETT SQUARE 1. A method used to predict probable offspring for a given problem. 2. A different form of a gene (the DNA for a trait), variant. 3. Someone that has two different forms of a specific gene, one from each parent. 4. Someone that has two identical forms of a gene, "true breeding Characteristics. 5. Noticeable characteristics of the genetic makeup (such as hair, eyes, and skin color) 8​