某研究性学习小组的同学对某地区人类的遗传病进行调查.在调查中�现甲种遗传病�病率较高往往是代代相传乙种遗传病的�病率较低.如表是甲病和乙病 Template




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tomski某研究性学习小组的同学对某地区人类的遗传病进行调查.在调查中�现甲种遗传病�病率较高往往是代代相传乙种遗传病的�病率较低.如表是甲病和乙病 coloring