Their trouble with language had been caused by the change of a single nucleotide of dna-just one letter in the genetic sequence.

他们的语言问题仅仅是因为DNA中一个核苷酸发生了改变，也就是说基因序列中有一个字母被改写了。

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A new member of the human evolutionary family has been proposed for the first time based on an ancient genetic sequence, not fossil bones.

人类学家首次发现人类家族进化史上有另一个新成员存在，这个发现来源于对古代基因序列而不是骨化石的研究。

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Rathore used a new technique, called RNA interference, to construct a genetic sequence that blocked the gossypol-producing enzyme in the seeds only.

拉索尔教授运用了一项名为核糖核酸（RNA）干扰的新技术，仅在棉籽中建立了一个阻断棉子酚生长酶的基因序列。

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These are short segments in which the sequence of genetic letters repeats itself.

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This is enough to produce a completely different sequence of genetic chunks - and results in the cell beginning to produce proteins that the virus can use to reproduce itself.

BBC: NEWS | Health | How HIV can sabotage human cells

Tying that knowledge to the exact genetic sequence will be a big step forward.

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