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Figure 6 | BMC Biology

Figure 6

From: On the origin of POU5F1

Figure 6

Model for the evolution of POU5F1 and POU2 in vertebrates. POU2 and POU5F1 arose by duplication of an ancestral gene in a common ancestor of Osteichthyes and Chondrichthyes. One or other gene then became extinct (indicated by dashed lines) in some lineages. The dogfish and little skate are representatives of Elasmobranchii.

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