Exon–intron-structure alignment of ABS- (A) and GOA-like (B) genes. Exons are shown as boxes, introns as horizontal lines. Colors indicate domains encoded by the exons as follows: orange, MADS domain; blue, I domain; green, K domain; brown, C domain. Vertical lines indicate identical nucleotides in neighboring genes in a multiple sequence alignment. A star next to the gene name indicates that the exon–intron structure is based on a prediction solely using genomic sequence. Exon numbers are given at the bottom.