Also, people without the gene variant can develop narcolepsy, though this is less common.

但拥有基因变体的人们也可能有睡眠障碍，只是不常见。

youdao

Positive people may owe their optimism to a gene variant that helps them dwell on the good and ignore the bad.

乐观主义者之所以会乐观向上也许是因为拥有能帮助他们凡事都向好的方面看且不去在意负面影响的基因。

youdao

Then the researchers zeroed in on a gene variant that offers protection against diseases like tuberculosis or leprosy.

然后，研究人员们将注意力集中于由基因变体所引起的，对诸如结核病或者麻风病之类的预防上面。

youdao

When present, this gene variant nearly doubled the risk of heart attacks and increased the risk of stroke by 67%.

FORBES: Attacking Heart Attacks

It points to seven studies Celera has done on 50, 000 patients that found the risk of the gene variant is real.

FORBES: Why You Shouldn't Trust Newfangled Gene Tests

He pointed to seven studies Celera has done on 50, 000 patients that found the risk of the gene variant is real.

FORBES: Gene Test For Heart Disease May Be Useless