The Salk Institute is trying to identify the genes related to eye color in fruit flies, but the samples were mixed up. They extracted DNA from a fly with the white eye mutation to compare the mixed up samples. After they extracted the DNA, they performed gel electrophoresis to compare the DNA patterns. Claim: The unknown sample that has the white eye mutation is .

Evidence: (How do you know?)

Reasoning: (What is the significance of your evidence?)