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科学史评话最新专辑

物种起源—正传:36. 走出非洲

10 Jun 2017

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上文书讲到了薛定谔的书《生命是什么》,也讲到了分子生物学的诞生。从此,人类就可以在分子水平上研究生命科学了,这是一个非常了不起的成就。我们还讲到,日本的木村资生发现,好像自然选择在分子级别是不起作用的。遗传嘛,说白了还是DNA的复制嘛。可是,DNA复制难免要出错的,虽然概率很低很低。出错的几率几乎不受外界影响。除非像摩尔根的果蝇那么倒霉。一般情况下,基因突变的概率总是大差不差的……

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