1. Is the fault in the components that perform any physical action?
Answer: Yes
2. Is the fault in components that move?
Answer: No
3. Is the fault in the mechanisms controls?
Answer: No
4. Does the faulty component responsible for visual data acquisition?
Answer: Yes
5. Is the faulty component only a part of the optics system?
Answer: Yes
6. Does the faulty component focus the sensory data?
Answer: No
7. Is the faulty component responsible for decoding information?
Answer: No
97) Chicken, Gallus gallus domesticus
Chickens can be found all over the world and are used for their meat and eggs. Chickens have been found to have the capacity to regenerate their retinal neurons if they were to get damaged.
It has been found that postnatal chickens have a proliferating marginal zone on the retina. The zone contains undifferentiated retina progenitor cells that originated from Muller glial cells and can help the retina regenerate (Fischer & Thomas). Notch pathway signals for the dedifferentiation of Muller cells to progenitor cells. Once they have become progenitor cells they can proliferate and re-differentiate into neurons in the eye. Although for them to become neurons Notch signaling pathway must be down-regulated (Hayes et al.). Once all of the damaged neurons have been replaced with new ones the Muller glial cells will stop proliferating.
Fischer, Andy J., and Thomas A. Reh. “Identification of a Proliferating Marginal Zone of Retinal Progenitors in Postnatal Chickens.” Developmental Biology 220 (2000): 197-210. University of Washington. Web. 23 Dec. 2014.
http://faculty.washington.edu/tomreh/wordpress/wp-content/uploads/2009/01/fischerreh2000db.pdf
Hayes, Susan, Branden R. Nelson, Brian Buckingham, and Thomas A. Reh. “Notch Signaling Regulates Regeneration in the Avian Retina.” Developmental Biology 312.1 (2008): 300-11. NCBI. Web. 24 Dec. 2014.
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