镰刀形细胞贫血症由基因突变引起其致病基因为隐性基因只有隐性纯合子才会�病携带者不�病且对疟疾的抵抗力高于正常人在非洲某些疟疾流行的 Template




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tomski镰刀形细胞贫血症由基因突变引起其致病基因为隐性基因只有隐性纯合子才会�病携带者不�病且对疟疾的抵抗力高于正常人在非洲某些疟疾流行的 coloring