本文概述了桑蚕可动遗传因子的研究进展。
This paper reviewed the advance in mobile genetic element of mulberry silkworm.
我们既不知道是什么遗传因子的组合以致产生天才的潜能，也不知道需要怎样的环境才可使天才有所成就。
We know neither what combination of genes produces the innate potentialities of the genius nor what kind of environmental conditions are needed to bring them to fruition.
这个难题对语言的基因根据的问题当然不是奇怪特殊的，但对遗传因子的行动和特征遗传之间的关联性就是了。
This puzzle is, of course, not peculiar to the problems of the genetic basis of language but to the relationship between genic action and the inheritance of traits in general.
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