To solve this problem, we need to match the scientists in List I with their corresponding discoveries or models in List II. Let's analyze each scientist:$\newline \bullet$A. Frederick Griffith:$\newline$ - Frederick Griffith is known for his experiment demonstrating the phenomenon of transformation in bacteria.$\newline$ - This matches with III.$\newline \bullet$B. Francis Jacob & Jacque Monod:$\newline$ - They are famous for their work on the lac operon, which is a model for gene regulation in prokaryotes.$\newline$