If your kids wish to pursue a hands-on study of how particular genetic traits are passed from generation to generation, breeding fruit flies proves to be an extremely convenient model organism. The following video shows the technique of growing, sorting, and analyzing them. Fruit flies with particular pure breeding traits can be purchased, (see Carolina BiologicalSupply Com.). (Conduct a Q and A discussion to emphasize how mitosis and meiosis are common features throughout the different kingdoms of organisms.)