Figure 2.

The ABC(DE)-model of Arabidopsis thaliana floral organ specification. (A) Determination of floral organ identity depends on the combinatorial expression of floral homeotic genes from different classes. (B) Color-coding of an A. thaliana flower image based on expression values (red: high expression; blue: low expression) (C) Integration of color-coded images, representing floral homeotic gene expression patterns, into the context of a regulatory network. The network is represented using the Activity Flow (AF) language of SBGN.