该项研究发现，同卵双胞胎的两个双胞胎儿都患有自闭症的可能性比异卵双胞胎的大。

The study found that the likelihood of both twins being affected by autism was higher among identical than fraternal twins.

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如果同卵双胞胎在某个特定的性格特征上较异卵双胞胎表现出更大的相似性。那么我们就可以确定，该性格特征或多或少受到了遗传的影响。

If identical twins are more alike than fraternal twins, therefore, we conclude that the trait under consideration is to some degree inherited.

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在这项研究中，他们和加利福尼亚大学圣地亚哥分校的克里斯托弗•道维斯使用了一项全国性数据，这项数据对1000多对同卵及异卵双胞胎的基因进行了对比。

For this study, they and Christopher Dawes of UCSD used national data that compared more than 1,000 identical and fraternal twins.

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