Coral Reef Cnidarians (IMAGE)

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Coral Reef Cnidarians

Caption

The spectacular diversity of coral reef cnidarians - corals, sea fans, sea anemones, soft corals and their relatives - is achieved without the involvement of a Hox cluster. Whereas in higher animals, morphological variation is often achieved by tinkering with the Hox system, cnidarians seem to be the exception. The Cnidaria is amongst the most species-rich and morphologically diverse of animal phyla, but lack a canonical Hox system.

Credit

Terry Hughes

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