Figure 7.

Dorsal axis duplication in Xenopus embryos in response to varying combinations of Wnt and FRP transcripts. Each bar represents the percentage of axis duplication; the solid portion within each bar represents the percentage of extensive duplication, which is defined by the presence of the cement gland and at least one eye in the duplicated axis. The total number of embryos injected in two to four independent experiments is indicated by the number above each bar. The amount of mRNA injected per embryo is shown below the bars.