Figure 2From: Testes-specific hemoglobins in Drosophilaevolved by a combination of sub- and neofunctionalization after gene duplicationDetection of branch-specific positive selection. Maximum likelihood approach applying CODEML for the detection of signs of positive selection along lineages, assuming the 'glob2/3 duplication-in-Sophophora subgenus' topology. An elevated omega ratio (dN/dS) was found along the branch leading to Sophophora glob2.Back to article page