Humans "are quite far away from whatever ancestral state we evolved in," Ellis said, removed from the selection pressures imposed on bands of early humans. But these whales live in similar environments and groups as their ancestors millions of years ago, he said.
Ellis 说,人类现在的状态已经进化得离我们的祖先很远了,我们已经脱离了早期人类面临的那些生存压力。但是现在的鲸类生存的环境依旧和它们百万年前的祖先很相似。
如果我们能弄清鲸类更年期的问题,或许我们离弄懂自己就更近了一步。
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