The apical cell of the first leaf and of the first root originate almost at the same time after the embryo reaches to the 32-celled phase.
The apical cell of the first leaf and of the first root originate almost at the same time after the embryo reaches to the 32-celled phase.
胚胎在32细胞阶段后，第一叶顶端细胞与第一根顶端细胞几乎同时发生。