Cambrian Explosion Mollusc Evolution Domestication Deuterostomes Saber Tooth Evolution Leech Evolution Butterflies Genetic Analysis Mandibulates Bats Early Animals Ecdysozoans Hooved Reptiles Iguanas Amphibian Evolution Bioluminescence Radiodonts Size Changes Morphological Changes Early Marine Life Sponges Pronghorn Evolution Skeletons and Shells Plant-Eating Animals Ctenophora Species Diversity Complex Life Forms Bilaterians Island Syndromes Reproductive Strategies Cephalopods
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The Nature paper shows that tiny blastopore tissue from a ctenophore can instruct host embryonic cells to form new mouth and axis structures, a result that could push axis-patterning back to the origin of animals.
