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Gaokao Biology Practice Question

经遗传改造的小鼠胚胎干细胞注入囊胚, 通过胚胎工程的相关技术可以获得具有不同遗传特性的实验小鼠。下列说法错误的是

A.用促性腺激素处理雌鼠可以获得更多的卵子
B.体外受精前要对小鼠的精子进行获能处理
C.胚胎移植前要检查胚胎质量并在囊胚或原肠胚阶段移植
D.遗传改造的小鼠胚胎干细胞可以通过转基因等技术获得

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