The figure below illustrates that
A. genetic changes in an ancestral Pax6 gene contributed to the evolution of the mammal eye, while the Drosphilia eye arose independently.
B. most animal species have eyes with one photoreceptor and one pigment cell.
C. eye complexity has not significantly increased since the late Triassic when most modern insect families arose.
D. the retina and cornea developed first, but then were secondarily lost in insects such as Drosphilia.
E. although the mammal eye possesses more cell types and greater complexity than the Drosphilia eye, both arose from genetic changes to an ancestral Pax6 gene.
E. although the mammal eye possesses more cell types and greater complexity than the Drosphilia eye, both arose from genetic changes to an ancestral Pax6 gene.
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