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有翅膀却不会飞，这种鸭子太难了
source link: https://tech.sina.com.cn/d/a/2019-09-12/doc-iicezueu5196939.shtml
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来源：Nature自然科研飞行能力在许多鸟类中已经难觅踪影。研究人员通过对比会飞和不会飞的船鸭的翅膀结构和基因组，提出了飞行能力丧失的一种可能机制。研究新出现特征的基因序列可以了解演化过程；然而，研究丧失的特征也能带来独特见解。如果某一特征
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