So in order to argue that what Myriad did was not an invention, and that isolated BRCA genes were products of nature, we had to explain a couple of basic concepts, like: What's a gene? What's DNA?
所以，为了辩明 Myriad 的成果并不属于创新， 以及离体的 BRCA 基因 是自然界的产物， 我们必须解释一些基本概念，比如： 基因是什么？DNA 是什么？