Figure 1.

Structure of the Obp83 genomic region across surveyed Drosophila species. The ultrametric tree has been reconstructed using information from [86] and from [87]. Branch lengths are expressed in million of years.

S├ínchez-Gracia and Rozas BMC Evolutionary Biology 2008 8:323   doi:10.1186/1471-2148-8-323
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