The mutation from DAG to DTG resulted in low transmission efficiency, even loss of the transmission ability by aphid.

结合前面的序列比对得出结论，DAG基序突变为DTG能使病毒的蚜传活性大大降低，甚至丧失。

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The disease is caused by a mutation of the ABCR gene which leads to the degeneration of photoreceptors in the retina and vision loss.

这种疾病是由基因的ABCR从而导致了在视网膜感光细胞退化和视力减退的突变。

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However, only some of the mutations were likely to cause hearing loss, and it was not known which mutation each mouse had.

然而，仅有一些突变似乎可导致听力丧失，目前还不知道每只小鼠有那种突变。

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The discovery of the FOXP2 brain gene, a mutation of which can cause language loss, was met with considerable excitement when it was announced over a decade ago.

ECONOMIST: What makes some people learn language after language?