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小小水蚤 拥有31000个基因


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水蚤是第一种科学家画出完整基因组系列的甲壳动物。咋一看,这个小生物很简单,透明的身体,有关节和四肢,复眼结构,还有简单的神经和循环系统。但是它的基因组不仅非常庞大,而且有很多神奇之处。科学家们研究发现,这个小生物要比已知的所有动物的基因都要多。在水蚤的DNA中,大约含有31000个基因;相比之下人类只有23000个左右。art01.gif

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