以显性雄性不育小麦为材料，采用改良半姊妹和混合轮回选择两种方案，对同一基础群体C_0进行了四轮选择。

The same basic population C0 had been selected for four cycles with Dominant male sterile wheat by means of the half-sib mating recurrent selection and the mass recurrent selection programmes.

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毫无疑问，个体差异有遗传基础，但认为社会定义的群体可以通过遗传解释却是错误的。

While there's an undoubted genetic basis to individual differences, it is wrong to think that socially defined groups can be genetically accounted for.

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第三，初级群体是基础，因为他们是社会控制的有力工具。

Third, primary groups are fundamental because they serve as powerful instruments for social control.

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And the challenge that we gave to ourselves is can we do that packaging in such a way that lays a ground work for community learning coming out of people who got involved in looking at the experiment of knowledge updates.

我们自己面临的挑战是,究竟能否,借用技术打包,为知识更新实验的,观看者的群体学习打下,坚实的基础。

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