Clasping hand was likely controlled by polygenes with several genes, in which a dominant gene played a major role, and others were modificatory ones.

扣手可能是由少数几对基因决定的多基因遗传，存在一个起主要作用的显性基因，其他基因对该显性主基因起修饰作用；

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Clasping hand was likely controlled by polygenes with several genes, in which a dominant gene played a major role, and others were modificatory ones.

扣手可能是由少数几对基因决定的多基因遗传，存在一个起主要作用的显性基因，其他基因对该显性主基因起修饰作用；

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