等位基因
等位基因，或对立基因、对应基因（英语：allele），是染色体内个基因座个DNA序列可能有交关多弗同个变化，各种变化形式称为等位基因，渠拉细胞有丝分裂辰光个两个染色体上个基因座是对应排列个，故拉早期细胞遗传学里称渠为等位。
拉一个二倍体（每条染色体侪有两套）生物体里，某个基因个基因型是由该基因座个等位基因所决定。
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