Which of the Following Statements About the Evolution of Eyes

Multiple Choice

Which of the following statements about the evolution of eyes in mice and fruit flies is false?

A) The gene Pax6 codes for a transcription factor involved in lens formation in the mouse.
B) In the fruit fly,the gene eyeless codes for a transcription factor involved in lens formation.
C) When the mouse gene Pax6 is inserted into a fruit fly;it forms a vertebrate-type lens on the fly's leg.
D) The sequences of the genes eyeless and Pax6 are very similar.
E) In blind cavefish,Pax6 gene expression is greatly reduced.