In: Biology
Taste receptors in the tongue are replenished periodically, presumably from a stem-cell niche residing in the tongue itself. For an image of the organization of taste receptors in the tongue. Both FGF and Wnt signaling are known to be important for the pattern of where some types of taste receptors are positioned in the tongue. Based on your answer to part (a), develop a hypothesis that explains how this might occur and how a niche for taste receptors might be regulated. Then, propose experimental approaches to test your hypothesis