Question

Fruit fly eyes are of the compound type, structurally very different from the camera-type eyes of mammals. even the camera-type eyes of mollusks, such as octopi, are structurally quite different from those of mammals. yet, fruit flies, octopi, and mammals possess very similar versions of a gene called pax-6. the fact that the same gene helps produce very different types of eyes is most likely due to

Answer 1

The different types of eyes is most likely due to the differences in the control of Pax-6 expression among these organisms.