Learn about human heredity with "Chuck" and "Charlie". Use the punnett square to select and mate Chuck and Charlie, learning about genotypes, phenotypes and probability.The digital download includes 3 pages (each) of images of Chuck and Charlie with varying traits and four pages of possible offspring. This lesson plan also includes a product description with directions, a punnett square, a phenotype and genotype table and applicable common core standards. Students will learn the connection between heredity and probability by producing a genetic traits poster project. Students will accurately create and produce a human traits punnett square and calculate both the genotypic and phenotypic ratios. Students will also answer discussion questions and write a reflection of their experiences of this activity.