Figure 5From: Comparative genomic analysis of the odorant-binding protein family in 12 Drosophila genomes: purifying selection and birth-and-death evolutionGlobal dS and ω values across the OBP genes under the M3 (K = 2) model. The analysis was conducted using information of only the six species of the melanogaster group of Drosophila. dS, synonymous substitution rate; OBP, odorant-binding protein; ω, nonsynonymous substitution rate/dS.Back to article page