Germline transmission of SB11-mediated transposon transgenes in Xenopus tropicalis. The CAGGS promoter in the pT2βGFP transposon drives widespread expression of the GFP reporter in F1 transgenic tadpoles. GFP-positive (a, c, e, g) and GFP-negative (b, d, f, h) F1 individuals are shown for four independent founder lines (♀622E (a, b), ♂623F (c, d), ♂2262 (e, f), ♂2232 (g, h)). Ventral views of each tadpole (approximately stage 45) are shown with the head in the lower right corner. Magnification 25X, same aperture and exposure times were used for each image.