But the research team was able to conclude that infectious diseases and the introduction of new foods were the primary reasons that some genes swept through populations with such speed.
但他的研究团队可以断定，传染病和新的食物是某些基因以如此快的速度成为人类基因的主要原因。
2
Primary liver cancer was seen as a hereditary disease of multiple genes, and also-was a product which were caused by combination of many factors.
原发性肝癌被视为多基因遗传病，同时，又是多种因素共同作用的产物。
3
As a possible peptide primary messenger, extracellular calmodulin (CaM) may regulate processes such as cell proliferation, pollen germination and expression of some genes.