如图为人类某种遗传病的家族系谱图6号和7号为同卵双生即由同一个受精卵�育而成的两个个体8号和9号为异卵双生即两个受精卵分别�育成的个体 Template




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tomski如图为人类某种遗传病的家族系谱图6号和7号为同卵双生即由同一个受精卵�育而成的两个个体8号和9号为异卵双生即两个受精卵分别�育成的个体 coloring