人类有耳垂是由显性基因d控制的无耳垂是由隐性基因d控制的.一对夫妇均有耳垂生了一个无耳垂的孩子则这对夫妇控制耳垂的基因组成是 A Template




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tomski人类有耳垂是由显性基因d控制的无耳垂是由隐性基因d控制的.一对夫妇均有耳垂生了一个无耳垂的孩子则这对夫妇控制耳垂的基因组成是 a coloring