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Genomes in Flux: New Study Reveals Hidden Dynamics of Bird and Mammal DNA Evolution

February 06, 2017

Evolution is often thought of as a gradual remodeling of the genome, the genetic blueprints for building an organism. But in some instances it might be more appropriate to call it an overhaul. Over the past 100 million years, the human lineage has lost one-fifth of its DNA, while an even greater amount was added, report scientists at the University of Utah School of Medicine. Until now, the extent to which our genome has expanded and contracted had been underappreciated. ... Read more

Human DNA Shows Traces of 40 Million-Year Battle For Survival Between Primate and Pathogen

December 11, 2014

Examination of DNA from 21 primate species - from squirrel monkeys to humans - exposes an evolutionary war against infectious bacteria over iron that circulates in the bloodstream. Supported by experimental evidence, these findings, published in Science on Dec. 12, demonstrate the vital importance of an underappreciated defense mechanism, nutritional immunity. ... Read more