Evolutionary relationships among E(spl) family members from six insect species. This tree is based on a multiple alignment that includes all members of E(spl), which has been rooted using the closely related Hey gene from D. melanogaster as outgroup. And only bootstrap values more than 50 are shown.
Liu et al. BMC Evolutionary Biology 2012 12:165 doi:10.1186/1471-2148-12-165