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Evolution thus favors a kind of genetically encoded pollyannaism .

进化从而有利于一种乐观的基因编码。

Genetically , queens and workers are identical .

从遗传学上来说，蜂后和工蜂是完全一样的。

Those that were genetically normal didnot .

而具有正常基因的老鼠则不会这样。

The genetically modified beasts did better .

其中通过基因改造的蚊子感染情况要好些。

An alternative way to stop mosquitoes transmitting diseases is to genetically modify them .

另一种阻止蚊子传播疾病的方式就是修改蚊子的基因。