Fig. 3. Class I knox genes in Arabidopsis. Dark shading indicates identical amino acids, light shading indicates conserved amino acids. The consensus sequence is shown below the alignments. The homeodomain is underlined. Amino acid changes in new bp alleles are marked above the sequence. Diamonds indicate single base changes resulting in an amino acid change to a stop codon in bp-6 and bp-7. In bp-8, D and * indicate single base changes leading to an amino acid substitution and creation of a stop codon, respectively. Two triplet nucleotide duplications result in amino acid insertions (N). An arrow marks the region where a Ds transposon disrupts KNAT2.