"We're trying to prevent kids being born with fatal diseases." Mitochondrial DNA is passed down only through the female line.

“我们一直在努力防止孩子一出生就带有致命的疾病”，线粒体dna只是通过母体遗传。

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Levels of mitochondrial DNA - a female genetic marker only carried down the female line - is similar all along the coast, regardless of language.

不管语言，沿海岸线的线粒体dna的层级——一个女性基因标记只携带了女性线链——是相似的。

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The team made a first breakthrough last year by using mammoth hair to extract mitochondrial DNA, genetic material that is inherited from the female line.

团队在去年通过从长毛象毛发中提取线粒状基因研究获得了第一次突破。这种线粒状基因物质是从雌性链体上遗传下来。

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She says this will be her next line of inquiry whether female hormones, such as estrogen, somehow protect young women from the neurological damage created by exposure to lead.

VOA: standard.2009.12.19

That's partly because there still aren't enough female line managers below Ms. Lovett, says TI's Ms. West.

WSJ: TI Battles a Line-Job Gender Gap

The Swedish team, with help from researchers at the University of Copenhagen, sequenced tens of thousands of base pairs from across the genome of the farm woman, going beyond earlier studies that looked at narrower slices, such as mitochondrial DNA inherited through the female line.

WSJ: Migrations Spurred Agriculture Spread, Studies Indicate

The fine line between female friendliness and flirtatious invitations (a line that many men confuse) are done away with in this ad.

FORBES: Super Bowl Ads Serve Up Sexism