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分节

分节的类型与生物学意义编辑本段

分节可分为体节分节（Somitic Segmentation）和体节模式（Metamerism）两大类：

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分节的意义在于提高运动效率、增强环境适应能力，并为复杂器官系统的进化提供模块化基础。

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脊椎动物的分节主要通过“时钟波前模型”（Clock and Wavefront Model）实现：

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分节研究不仅揭示胚胎发育的保守机制，也为进化发育生物学（EvoDevo）和再生医学提供重要理论依据。

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