Fig. 1.

Ci-Tbx2/3 notochord expression is controlled by Ci-Bra. (A-C) Whole-mount in situ hybridization for Ci-Tbx2/3 on mid-tailbud wild-type embryos (A) and the offspring of Ci-Bra heterozygous animals (B,C). The percentage of embryos exhibiting each phenotype is provided in the upper right corner of each panel, whereas the total number of embryos scored is in the lower left corner. Notochord expression is highlighted by a red arrowhead, while a white arrowhead denotes lack of expression in this domain. Colored arrowheads indicate other expression domains as follows: blue, CNS; green, epidermis. Scale bar: 40 μm.