Tracking genomic divergence in humans, chimpanzees and their lice

A new study compares the relative rate of molecular evolution between humans and chimps with that of their lice. The researchers wanted to know whether evolution marches on at a steady pace in all creatures or if subtle changes in genes - substitutions of individual letters of the genetic code - occur more rapidly in some groups than in others.A report of the study appears in the Proceedings of the Royal Society B.

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