ɪnðə sˈɛntɹəl nˈɜːvəs sˈɪstəm sˌiːˌɛnˈɛs, ˌoʊvɚɹˈɔːl sˈɛl fˈeɪt mˈæpɪŋ ɪz tˈɪpɪkli dᵻɹˈɛktᵻd baɪ ðə sˈɑːnɪk hˈɛdʒhɑːɡ ˌɛsˌeɪtʃˈeɪtʃ mˈɔːɹfədʒən sˈɪɡnəlɪŋ pˈæθweɪ.
In the central nervous system (CNS), overall cell fate mapping is typically directed by the sonic hedgehog (Shh) morphogen signaling pathway.