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19 天
马达加斯加的“转基因工厂”:青蛙为什么有了蛇的基因?
从青蛙体内发现了蛇的基因,到底是怎么回事?其实并不奇怪,这就是基因的水平转移。近年来,研究人员发现了许多基因水平转移的现象,不仅在细菌这样的原核生物身上,也在真核生物,甚至是植物和昆虫之间,都有基因的跳跃。这或许就是生存的智慧。
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