Figure 2.

Molecular evolution of a 60 AmOr gene array on chromosome 2. The 60 genes are in a perfect uninterrupted tandem array and were numbered from left to right (AmOr2 is the previously named ortholog of the conserved DmOr83b protein and is on chromosome 1). The phylogenetic relationships of these 60 genes are shown in the corrected-distance cladogram of their encoded Ors below the array (AmOr1 and 3 were declared the outgroup based on their location in Fig. 1; branch lengths in this cladogram are meaningless). The few incompatibilities between the tree and the gene location are indicated by diagonal lines.