But there are lots of extraordinary things we can do with GMOs already: We can create transgenic plants, which have genes derived from a different species.

但是我们已经可以用转基因生物做很多非凡的事情：我们可以创造转基因植物，这些植物有来自不同物种的基因。

In eukaryotes, if the introduced genes are derived from another organism, the resulting transgenic plants or animals can be propagated by normal breeding.

转基因羊已经被生产了出来，可以通过它们的奶生产有价值的蛋白。目的基因需要羊的启动子（酪蛋白或乳清蛋白）以确保在乳腺中表达。从奶中纯化蛋白要比从培养的细胞中纯化蛋白要容易的多。