Fig. 6

Collinearity relationship between the orthologs of AQPc7 (a) and AQPc8 to -c10 (b) in different species. The round-corner rectangles filled in yellow represent the conserved regions of the chromosomes in different species. The words behind the round-corner rectangles represent the number of chromosomes. The circles filled in red represent the AQP orthologs appeared in the corresponding chromosome. The hollow circles represent the lost AQP orthologs in the corresponding chromosome. The red curves represent the linkages between the AQP orthologs. The dashed lines represent the imaginary linkages between the lost genes