For a class of 32 students. How are traits passed from one generation to the next? In this 45-day investigation, students observe 3 generations of plants as they attempt to unravel the mystery of paternity. As the activity progresses, students develop explanations, based on their own observations, for the inheritance of either 1 or 2 Mendelian genes. Use the Monohybrid Kit (1 gene) for beginning genetics; use the Dihybrid Kit (2 genes) for more advanced students. Kit includes everything needed, except water and a light source. We recommend the Plant Light House™ (item# 158994) as a light source.