Over the past decades,continuous effort has been made to resolve unsettled matters in the emerging scene of neuronal development.Despite the rapid progress,neuroscientists remain fascinated by the intricate networks of signaling pathways and molecules conserved among species.Fundamental questions such as progenitor cell specification,compartmentalized cellular tactics,and the identification of factors involved in orchestrating the progression of development are being actively pursued.Furthermore,reversing the effects of development,neurodegeneration symbolizes an opposite force in limiting growth and has been linked to a variety of diseases.To date,a tremendous amount of work from the research community has conceptualized the central image of how nervous systems develop and are equipped to modulate animal functions,albeit with mysterious gaps in the picture that remain to be filled.