利用dna序列的公共数据库，他们发现说非声调语言的人通常有两种不同基因的突变形式。

Using public databases of DNA sequences, they found that people who speak non-tonal languages commonly have mutated versions of two different genes.

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但是他补充说，他怀疑传闻将会产生坏的影响，他也不希望遗传序列被排除在公共数据库。

But he added that he doubted that the rumor would prove damaging, and he said he would not want genetic sequences kept off public databases.

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