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.

Question

Quizplus · Accepted Answer

While both A and B are true statements, C is false. When the mouse Pax6 gene is inserted into a fruit fly, it does not form a vertebrate-type lens on the fly's leg. Rather, it can induce eye development in the fly, but the resulting eye is not like that of a vertebrate eye.

Which of the Following Statements About the Evolution of Eyes