bacterial population 细菌数 ; [微] 细菌群体 ; 细菌种群
R-factor bacterial population 因子细菌群
bacterial population density 细菌群体繁殖密度
general bacterial population 细菌总数 ; 一般细菌数
degraded-bacterial population 降解菌种群
bacterial population succession 种群演替规律
intestinal bacterial population 肠道菌群
The accepted scenario was a simple case of evolutionary selection. In a bacterial population exposed to a killer drug, a few lucky individuals might have a genetic mutation that kept them alive.
我们本以为这是再简单不过的进化选择了：当药物杀向全体细菌时，总有那么几个幸运儿，基因突变了，小命保住了，它们可以活下来继续繁殖下一代，而剩下的那些倒霉蛋就从此命归黄泉了。
A competing theory is that a mutagenesis drug may eradicate a virus or bacterial population by reducing the fitness to negative values.
一个竞争性的理论是诱变药物通过降低对负面价值的适应性而根除病毒或细菌群体。
In a bacterial population exposed to a killer drug, a few lucky individuals might have a genetic mutation that kept them alive.
当一个具有相当数量的细菌种群与一种杀菌剂“狭路相逢”时，只有少数幸运的细菌可以基因突变从而存活下来。
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