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Anemone genes reveal versatile building blocks for body plans

TGFß ligands and downstream components deployed exclusively in the endoderm, or inner germ layer.

It therefore appears that the ancient, ancestral function for this signaling system may have been to determine the different germ layers of the developing embryo in animals that lacked a bilateral body plan. Over evolutionary time, the genes acquired a new and important role in establishing the dorso/ventral axis, eventually leading to the diversity of bilateral animals present today.


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Source:Cell Press


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