Figure 3.

Intron–exon structure of class III HD–Zip coding regions. Introns within the coding region are numbered 1–17 according to the maximum number present in Arabidopsis genes. Exons are represented by wider, shaded bars; introns by black lines. Lines and bars are proportional in length and represent total sequence length except for MpC3HDZ1 in which segments of two long introns are omitted as indicated by double breaks. Length of missing segments are indicated above. Yellow, homeodomain; green, leucine zipper; blue, START domain; red, miR165/166 binding site; gray, carboxy terminus.