Understanding how brains evolved is critical to determine the origin (s) of centralized
nervous systems. Brains are patterned along their anteroposterior axis by stripes of gene …

Neurogenesis has been studied extensively in the ectoderm, from which most animals
generate the majority of their neurons. Neurogenesis from non-ectodermal tissue is, in …

In many developing tissues the patterns of gene expression that assign cell fate are
organised by secreted signals functioning in a graded manner over multiple cell diameters …