Figure 1.

(A) Nucleotide and deduced amino acid sequences of the squid L. opalescens embryonic Pax-6 cDNA. The paired domain and homeodomain are boxed. Two arrows indicate the positions of two known introns in the L. opalescens Pax-6 gene. (B) Comparison of the amino acid sequences between paired-, homeo- and C-terminal domains of vertebrate and invertebrate species. The squid sequence is shown in full; for other sequences only differing amino acids are shown. A - indicates gaps that were introduced to maximize similarities in the C-terminal domain; an * marks the end of the known nemertine sequence. The percent identities are shown for the squid sequence.