Then you are looking at a land like nothing else in the world.

VOA: special.2009.10.07

The genome starts piling on mutations that mean nothing; that's how they date the branches of the genome, by looking at the number of neutral mutations.

基因积累了许多无意义的突变,这就是他们如何鉴定基因分支的年代,看中性突变的数量就行了

耶鲁公开课 - 金融市场课程节选