But the H1N1 2009 is an entirely new combination of four genetic elements: a bird flu, some human flu genes and two types of swine flu.

但2009年的H1N 1流感结合了四种基因成分，因而是全新的。这四种基因成分分别是：禽流感，一些人流感基因，以及两种猪流感。

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The integron located on mobile genetic elements was found to be an important factor that results in the horizontal transfer of the resistance genes between bacteria.

可移动遗传元件整合子被认为是导致耐药基因在细菌间水平转移的重要原因。

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Retrotransposons are one of the most unstable genetic elements in the plant kingdom, they have the potential to dramatically affect gene function and host genome structure.

反转录转座子是植物中最不稳定的遗传元件之一，它们对基因组的大小、结构、功能和进化都有重要作用。

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In recent years, some scientists have argued that such selfish genetic elements serve the greater good in the long run by making species more "evolvable, " like insects, and that this explains their existence.

WSJ: Matt Ridley on Selfish DNA | Mind & Matter

So while any baby born through this method would have genetic elements from three people, the nuclear DNA that influences appearance and other characteristics would not come from the woman providing the donor egg.

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