Coactivation of Rac and Rho by Wnt/Frizzled signaling is required for vertebrate gastrulation.
Habas, Raymond, Igor B Dawid, and Xi He. 2003. “Coactivation of Rac and Rho by Wnt/Frizzled Signaling Is Required for Vertebrate Gastrulation.”. Genes & Development 17 (2): 295-309.