+Gastrulation is a crucial phase in early [Embryonic Development](/wiki/embryonic_development) where a single-layered [Blastula](/wiki/blastula) transforms into a multi-layered gastrula. This profound rearrangement establishes the primary germ layers, laying the fundamental blueprint for an organism's entire body.
+## See also
+- [Blastulation](/wiki/blastulation)
+- [Germ Layers](/wiki/germ_layers)
+- [Organogenesis](/wiki/organogenesis)
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