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科学家提取出史上最古老DNA可追溯到165万年前 - 站长搜索
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科学家提取出史上最古老DNA可追溯到165万年前

趣科技 2021-02-19 10:06:07 转载来源: 环球网

【综合报道】2月19日消息,据外媒报道,研究人员近日从猛犸象象牙上提取出目前最古老的脱氧核糖核酸(DNA)。此次的DNA样本来自于俄罗斯西伯利亚地区的冻土层

【综合报道】2月19日消息,据外媒报道,研究人员近日从猛犸象象牙上提取出目前最古老的脱氧核糖核酸(DNA)。

此次的DNA样本来自于俄罗斯西伯利亚地区的冻土层。20世纪70年代,3头猛犸象遗骸于此地出土,其中1头最早生活在165万年前。虽然样本出土已有数十年,但至今研究人员才得以提取出其中的DNA并完成测序。

据了解,从该样本中提取DNA很有挑战性,因为仅有少量的DNA存于其中,还被分解成短小的片段。

研究人员洛韦·达伦表示,这是科学家们目前发现的最古老的DNA。若想完成完整的“基因拼图”并更详尽地研究物种演化过程,科研人员需要为数十亿短小的DNA片段测序。

据悉,科学家们此前完成测序的最古老DNA来自一匹马的腿骨,这匹马大约生活在56万至78万年前。

标签: 科学家 取出 史上 古老 DNA 可追溯 万年前


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