Vertebrates have a gene called Pax6, and this gene codes for aprotein that functions as a transcription factor. Where-ever Pax6protein is produced in young embryos, an eye develops. a. Wherewould the Pax6 gene be normally expressed in this embryo? b. If onecould cause the Pax6 gene to be expressed on the stomach of anembryo, what do you suppose would happen? c. Pax 6 protein is atranscription factor. What does that mean in terms of proteinfunction? d. Eye development is complicated, and it includes lotsof cell ïƒ cell signaling (inductions). How is it that atranscription factor can result in cell to cell signaling?
