Fig. 1. Nucleotide sequences of the coding regions of cmdh cDNAs from Mytilus trossulus (M. t.), M. galloprovincialis (M. g.) and M. californianus (M. c.). Dashes represent identity with the M. trossulus sequence. The codons for the non-conservative substitutions at residue 114 in each ortholog are highlighted. In a number of positions, nucleotide ambiguities (i.e. double peaks) were noted in the source electropherograms: M=A or C; R=A or G; Y=C or T; W=A or T; all ambiguities are synonymous in the deduced amino acid sequence.