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用荧光Q显带多态性对114例21三体综合征父母减数分裂不分离起源进行了研究。76%病例判定了起源,父源35%,母源65%,仅1例母源M_2期不分离。讨论了减数分裂不分离的有关问题。
The origin of meiotic segregation of 114 trisomy 21 mothers was studied using fluorescent Q-banding polymorphism. In 76% of the cases, the origin was determined, with 35% of the parent and 65% of the maternal, and only one of the maternal M_2 was not segregated. Discuss the issue of meiosis does not separate.