GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - YTM71WRSQ7UCRW45K

New methods developed in genetic research have led taxonomists to revise their views on the evolutionary relationships between many species. Traditionally the relatedness of species has been ascertained by a close comparison of their anatomy. The new methods infer the closeness of any two species' relationship to each other directly from similarities between the species' genetic codes.