G,H) GFP::ZNFX-1 (panel G) fluorescence or PGL-1::TagRFP fluorescence (panel H) in the anterior (A) or posterior (P) section of a one cell embryo. Anterior and posterior regions were determined based on corresponding DIC images. N=4 embryos for G, N=3 embryos for H. Error bars are +/- s.d. 