Figure 2

Phylogenetic analysis of intact single exon OR and TAAR genes in Petromyzon marinus. Genes are identified by a supercontig number followed by a gene family designation and predicted amino acid length. The neighbor-joining tree was constructed using CLUSTALW-aligned amino acid sequences and distances were computed using the JTT protein matrix. Confirmed expression is denoted by an asterisk (*), and solid circles represent life stage in which expression was detected by 454 and EST sequencing (red, adult and parasite olfactory organ 454; blue, adult olfactory organ 454; green, parasite olfactory organ 454; and purple, embryo EST). Branch lengths are included and statistical support is given as a percentage of 1000 bootstrap replicates.