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Figure 7 | EvoDevo

Figure 7

From: Expression of multiple Sox genes through embryonic development in the ctenophore Mnemiopsis leidyi is spatially restricted to zones of cell proliferation

Figure 7

Evolutionary history of the of Sox transcription factor family. According to our analyses and within the context of the animal tree that places ctenophores as the earliest-branching group [15–17], true Sox genes arose at the base of the animals, while Sox-like HMG-box genes are present in Choanoflagellata. A red square indicates the loss of the SoxF group from that lineage. Alternative animal trees that place Porifera or Placozoa as the earliest branch would indicate that the SoxF group was absent in the earliest animal ancestor but arose in the lineage leading to Ctenophora.

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