Answer:
the Pax-6 genes of flies and mice arose from an ancestral gene in a common ancestor
Explanation:
Based on the information provided within the question it can be said that from this scenario scientists were most likely able to induce that the Pax-6 genes of flies and mice arose from an ancestral gene in a common ancestor. This is mainly due to the fact that this process led to formation of the compound eye of a fly which demonstrates the connection.