Many genes for taste and smell show signs of selective pressure, perhaps reflecting the change in foodstuffs as people moved from nomadic to sedentary existence.
许多味觉和嗅觉基因显示出选择性压力的迹象，也许反应了当人们的生活从流动到稳定时食物上发生的变化。
The use of any antimicrobial for any infection, in any dose, and over any time period, forces microbes to either adapt or die in a phenomenon known as “selective pressure”.
针对某种感染使用某一剂量的某种抗菌剂一段时间，会迫使微生物或是适应，或是死亡；这种现象称为“选择压力”。
When disease control efforts are stepped up, especially through the mass administration of medicines, causative agents are put under enormous stress, which is expressed as selective pressure.
当疾病控制努力逐步加强，尤其是通过大规模施用药物来控制疾病时，病原体被置于巨大的选择压力之下。
Under the selective pressure of bats, nocturnal moths have evolved many adaptive traits to defense and evade bats.
在蝙蝠回声定位的选择压力下，夜间活动的蛾类进化出一系列防御、逃避等适应性特征。
If the individual populations' environments were exerting strong selective pressure, such differences should have been apparent.
但如果某一人群的环境真正具有很强的选择压力那么上述差异会很明显。
The result demonstrated that the immune selective pressure only had selective function, but not the creating - mutation function in the mutation of virus.
本研究结果显示，抗体这一免疫压力在病毒的变异中可能只起选择性作用，而不起促进变异的作用。
Conclusion; the DDDs, that is the selective pressure of the antibacterial usage, is one of the main influencing factors of the variation of drug resistance.
结论：抗菌药的用药频度，即抗菌药应用的选择性压力，是影响细菌耐药性变异最主要的因素之一。
Objective Study the relationship between type A influenza virus genetic variation with survival selective pressure, help for the finding of possible vaccine conserved antigen target.
目的研究甲型流感病毒基因变异与生存选择压力的关系，指导保守疫苗靶位点的寻找。
Objective Study the relationship between type A influenza virus genetic variation with survival selective pressure, help for the finding of possible vaccine conserved antigen target.
目的研究甲型流感病毒基因变异与生存选择压力的关系，指导保守疫苗靶位点的寻找。
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