正确答案: B

人工授精后的一定时间内，收集供体原肠胚用于胚胎分割

题目：下列关于利用胚胎工程技术繁殖优质奶羊的叙述．错误的是

解析：B

查看原题

举一反三的答案和解析：

[单选题]盐肤木因五倍子蚜虫的寄生而在叶上产生五倍子，是一种变态现象。( )

错误

[单选题]---I haven’t got the reference book yet, but I’ll have a test on the subject next month.---Don’t worry. You______ have it by Friday.

shall

[单选题]子囊菌在形成子囊孢子之前要经过锁状联合过程。( )

错误

[单选题]29______

serves

[单选题]质体是一类与碳水化合物的合成及贮藏相关的细胞器。( )

正确

[单选题]The children all turned the famous actress as she entered the classroom.

to look at

[单选题]硅藻的复大孢子仅在有性生殖时才形成。( )

错误