... ancestry 祖先先辈 descent offspring 后代后辈 succession 继承 ...
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... genewoulsogy 先人先进 descent offspring 后代子弟 succession 承继 ...
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descent offspring
血统的后代
以上为机器翻译结果，长、整句建议使用 人工翻译 。
They all have a common ancestral mother, by virtue of their descent from whom the female offspring in each generation are sisters.
她们全体有一个共同的女祖先；由于世系出自同一个女祖先，后代的所有女性每一代都是姊妹。
youdao
Mitochondrial DNA is passed down from mothers to their offspring, so only all-female lines of descent can be traced using those indicators.
CNN: February 4, 2013 -- Updated 1805 GMT (0205 HKT)
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