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Figure 1 | BMC Evolutionary Biology

Figure 1

From: A general scenario of Hoxgene inventory variation among major sarcopterygian lineages

Figure 1

Current status of the investigation of Hox gene inventory in different sarcopterygian groups along with a generally accepted tree for these groups. We use a tritomy node for turtles, squamates (lizards and snakes) and archosaurs (birds and crocodiles), reflecting the current controversy on the relationships among them. Note that relevant information in most amphibian and reptile groups is either incomplete or missing.

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