Science Buddies: "Ask an Expert"

Me and my 4th grader have recently did a science experiment extracting dna from fruit. One of the questions she has to answer is how she could use the knowledge she gained from the experiment. We are both drawing blanks. She is into life schience and did this because it sounded fun, and it was, but we're not sure how she can use such knowledge just yet.

Have you finished the experiment? What relationship between two variable are you testing? With this information, it is easier to answer your question, because science relies on the impact one variable has on another.