For the A3GALT2 genes, the sequence of GDFYYHAA(I/L/V)FGG is also highly conserved. Rabbit (GDFYYHATL--G) and cat (GDFYYHTAVFGG) A3GALT2 genes were the only exceptions among the species whose gene sequences were determined. Two findings suggest that the A3GALT2 genes in these two species are non-functional. The first is the deletion of two amino acid residues (--) inside the conserved sequence in the rabbit sample. The second is the longer deletions downstream of these conserved sequences in both rabbit and cat genes.