通过对胎儿或新生儿的体细胞组织的切片或血涂片观察难以�现的遗传病是 A.苯丙酮尿症携带者 b21三体综合征 C.猫叫综合征 D.镰刀型细胞 Template




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tomski通过对胎儿或新生儿的体细胞组织的切片或血涂片观察难以�现的遗传病是 a.苯丙酮尿症携带者 b21三体综合征 coloring