Fig. 6. Conservation of expression patterns for Hox genes in τ-ξ spacetime.

A The expression patterns of Hoxa13 and Hoxa11 obtained by RNAscope assays at three different time points on the common clock (see Supplementary Fig. 7 for Hoxd13 expression). Each experiment was independently repeated three times (at each time point) for each gene with similar results. B ξ-representation of the expression patterns of the Hox genes shows a high degree of similarity between species.