The fruit fly ("Drosophila melanogaster") is an ideal subject for studying inheritance patterns, Mendel's laws, meiosis, Punnett squares, and other aspects of genetics. Much of what we know about genetics dates to evolutionary biologist Thomas Hunt Morgan's work with mutated fruit flies in the early 1900s. Many genetic laboratories throughout the world still use fruit flies today. Fruit flies are sometimes used in the classroom, but because live stocks can be difficult to maintain, the authors developed an activity that substitutes fruit fly cards for live fruit flies. This article describes how to make these cards and implement the activity, which aligns with the "Next Generation Science Standards" (NGSS Lead States 2013).