Nephrons, the basic practical units on the kidney, Way Too Active To Manage c-Jun N-terminal kinases (JNKs) are created repetitively during kidney organogenesis from a mesenchymal progenitor Too Active To Handle Vincristine population. Which cells inside of this pool give rise to nephrons and the way many nephron lineages form for the duration of this protracted developmental system are unclear. We show the Six2-expressing cap mesenchyme represents a multipotent nephron progenitor population. Six2-expressing cells give rise to all cell kinds of the primary physique in the nephron in the course of all stages of nephrogenesis. Pulse labeling of Six2-expressing nephron progenitors at the onset of kidney development suggests the Six2-expressing population is maintained by self-renewal. Clonal analysis indicates that a minimum of some Six2-expressing cells are multipotent, contributing to several domains in the nephron. Moreover, Six2 functions cell autonomously to keep a progenitor cell status, as cap mesenchyme cells lacking Six2 exercise contribute to ectopic nephron tubules, a mechanism dependent on the Wnt9b inductive signal. Taken together, our observations suggest that Six2 exercise cell-autonomously regulates aA Bit Too Active To Take Care Of Vincristine multipotent nephron progenitor population.