Fig. 7. Fate map of wild-type, sqt^-/-; cyc^+/+, sqt^-/-; cyc^+/- and sqt^-/-; cyc^-/- embryos. Positions of clones along the animal-vegetal and dorsoventral axes are depicted on a graphic representation of an embryo, in which each line represents a different row of cells. The `0' line represents cells in contact with the YSL. In the dorsal region, clones generating neural fates arose at least eight cell rows animal to the margin in wild-type (A, top panel). By contrast, sqt^-/-; cyc^+/+ (B) and sqt^-/-; cyc^+/- (C) embryos, clones at the dorsal margin produced spinal cord, hindbrain and midbrain. (D) As previously reported, dorsal marginal cells in sqt^-/-; cyc^-/- adopt neural fates. Two ventrolateral clones adopted tail muscle fates. The genotypes of all embryos shown were determined by PCR after photography.