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对控制多趾的相关基因及其分子机制进行研究，有利于我们深入了解多指（趾）畸形的形成机制，揭示肢体发育的过程和机理。

Study the genes of polydactyly and molecular mechanism can help us to know how limbs form and reveal the producing process of limbs.

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现在，一份对鸡胚胎的研究，鸟类的翅膀的趾中确实有类似于人类拇指、食指和中指的趾的分化。

Now, a study of chick embryos shows that birds do indeed have thumb, index, and middle "fingers" in their wings.

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