If the Hedgehog Gene Was Nonfunctional in a Developing Drosophila

Multiple Choice

If the hedgehog gene was nonfunctional in a developing Drosophila, what might happen to the morphogenetic furrow in eye development?

A) No morphogenetic furrow would form
B) The morphogenetic furrow would move too quickly
C) The morphogenetic furrow would move too slowly
D) The morphogenetic furrow would move across the optic disc without any cells differentiating