In many animal embryos,the eye develops very early.The Pax6 protein is important to eye development;its absence can prevent the formation of eyes in mice and humans.Thus,Pax6 probably acts as a(n)_____.
A)structural protein retinal and/or lens cells
B)intercellular signal transmitted between retinal and lens cells
C)transcriptional factor that regulates genes involving retinal and/or lens cells
D)extracellular matrix protein secreted by the retinal and/or lens cells

Question

Quizplus · Accepted Answer

The statement mentions that Pax6 is important for eye development, and its absence can prevent the formation of eyes. This suggests that Pax6 is involved in regulating genes that are necessary for eye development, which characterizes it as a transcription factor rather than a structural protein, intercellular signal, or extracellular matrix protein.

Therefore, Choice C is the best answer.

In Many Animal Embryos,the Eye Develops Very Early