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单亲二体
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单亲二体
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单亲二体
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uniparental disomy
单亲二体
体细胞中同源染色体或同源染色体上的片段均来自同一个亲本,而没有来自另一个亲本的拷贝。如果两条染色体来自同一亲本的姐妹染色单体,称为单亲同二体(isodisomy);如果两条染色体来自同一亲本的两条同源染色体,称为单亲异二体(heterodisomy)。
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