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Alternatively, a new version of a gene can also be created through reverse transcription: during gene expression, the mRNA is copied back into a sequence of DNA that is inserted into the genome.

其二,新基因复本也可反转录作用,将基因表现出来mRNA反转录成DNA序列,再插回基因组现象称为反转录移位(retrotransposition),发生在细胞称为长散布核因子(LINE)转位子活动时。

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3G, 401(K), a,

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是,大臣(Yes, Minister)第一季

I'll keep a copy, if I may, on the files.

,我会拿一份复本存档。

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和Vanessa学口语

Feel free to repeat this lesson as much as you need.

您可根据需要随意重复本课程。

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绝望主妇视频版 第3季

I have to get a copy of the seating chart for you, Gabby.

我得给你弄张座位表复本 加布。

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记第九季 Friends Season_09

Here's your copy of the bill, we hope you enjoyed your stay.

这是帐单复本, 希望 你们在这里过很愉快。

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越狱 第1季

Records show that you made a dupe of the surveillance tape.

记录显示你给监视录像带做了个复本

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商务英语情景口语100主

Ask his secretary to fax them. It's the same thing. Have them faxed over, with a copy also faxed to Martin's office.

秘书把这些材料发传真过来,也一样。传真发完之后,再给马丁办公室传一份复本

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商务英语

Ask his secretary to fax them. It's the same thing. Have them faxed over, with a copy also faxed to Martin's office.

秘书把这些材料发传真过来也一样。传真发完之后,再给马丁办公室传一份复本

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绝望主妇(音频版)第三季

Oh, uh, that reminds me. I have to get a copy of the seating chart for you, Gabby. You are in charge of the centerpieces. And don't worry, Susan. I will think of a job for you.

这倒提醒我了。我得给你弄张座位表复本,加布。你负责餐桌中心摆饰。苏珊,别担心。我会找个活儿给你干

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3G, 401(K), a,
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