yán jiū rén yuán / tōng guò / jī yīn / fēn xī / bǐ jiào / le / bù tóng / hǎi qiào / zhǒng qún / zhī jiān / de / qīn yuán guān xì

研究人员通过基因分析，比较了不同海鞘种群之间的亲缘关系。

Using genetic analysis, the researchers compared the relationships among different sea squirt populations.