DNA条形码揭示生物进化如何展开

It is textbook biology, for example, that species with large, far-flung populations -- think ants, rats, humans -- will become more genetically diverse over time.

But is that true?

"The answer is no," said Stoeckle, lead author of the study, published in the journal Human Evolution.

见：

Sweeping gene survey reveals new facets of evolution

Sweeping gene survey reveals new facets of evolution - afp.com

Sweeping gene survey reveals new facets of evolution