Genetics reveal ancient trade routes of Four Corners potato

A new study shows that a native potato species was brought to southern Utah by Indigenous people in the distant past, making it a candidate for the only culturally significant plant species to have been domesticated in the ...

Research tracks 66 million years of mammalian diversity

When trying to understand the present, it's helpful to look to history. New research from the University of Nebraska–Lincoln examined the fossil record going back 66 million years and tracked changes to mammalian ecosystems ...

Zooplankton study challenges traditional views of evolution

In new research, Arizona State University scientists and their colleagues investigated genetic changes occurring in a naturally isolated population of the water flea, Daphnia pulex. This tiny crustacean, barely visible to ...

Diversity in typhoid bacteria linked to higher mortality rates

Worldwide, 20% of the bacterial strains that cause typhoid fever have genetic variations in their external layer, called Vi capsule, that provide higher virulence, higher infectivity and high antibiotic resistance, Cornell ...

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