Date of Award


Publication Type

Master Thesis

Degree Name



Biological Sciences

First Advisor

Crawford, Michael


eye development, pax6, rax1, six3, transcription factor



Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.


Three homeobox transcription factors were studied for their importance in eye development - rax1, pax6, and six3. Rax1 encodes transcription factors that regulate genes necessary for the development of the eye. I show that perturbation of rax1 expression via morpholino mediated translational knockdown has no affect on the shape of pax6 and six3 expression domains at early stages. Significant pax6 expression changes were only seen at later stages of development. This inverts the hierarchal model of these transcription factors in early eye development. Furthermore, to confirm the position of these genes in our model we examined the relationship of significant eye field markers - namely, foxe3, �-crystallin, pitx3, mafA, and otx2. By knocking down rax1 and observing the outcome on the eye field markers I established that rax1 is a major contributor but downstream to the overall process of eye development.