population genetic basis的意思|示意

In fact, there is no scientific basis for theories pushing the genetic superiority of any one population over another.

实际上，那种认为某一种群比另一种群的基因更优越的理论是毫无科学根据的。

However, the narrow genetic basis of wheat has limited the further improvement of yield and quality, which is essential to maintain the increasing population.

但随着小麦栽培品种单一化导致基因大量流失，使其遗传基础日益狭窄和抗源匮乏，对其产量和品质的进一步改良起着极大的限制作用。