Solve the puzzle of how genes are inherited and sometimes appear or disappear in families. Using these 36 magnetic shapes, representing males and females with the three possible genetic combinations (affected, carriers or not affected), all types of inheritance (complete dominance, incomplete dominance whether autosomal or sex linked) can be investigated. The teacher's guide has actual case studies and lesson outlines as well as reproducible student work sheets in English and French. Grades 7 +