12 years and up. (7th grade minimum)

Students work through the steps of meiosis in “LEGO® fish” cells to understand the process of gamete cell division and the ways that genes can be expressed. After modeling meiosis with LEGO® bricks, students predict the phenotype and genotype of possible offspring for two parents with a known genotype. They discuss how a single phenotype could be the result of several different genotypes, and see how the environment interacts with and affects the gene pool of a given population.