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 thepattern of where some types of taste receptors are positioned inthe tongue. Based on your answer to part (a), develop a hypothesisthat explains how this might occur and how a niche for tastereceptors might be regulated. Then, propose experimental approachesto test your hypothesis
