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image: Natural Selection Kept Neanderthal DNA in Modern Humans

Natural Selection Kept Neanderthal DNA in Modern Humans

By | December 29, 2016

Interbreeding with Neanderthals appears to have reintroduced genetic sequences related to innate immunity that had been lost as humans migrated out of Africa. 

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image: How These Rodents Got Their Stripes

How These Rodents Got Their Stripes

By | November 2, 2016

The African striped mouse and the chipmunk develop dorsal stripes through a newly identified mechanism of coat color variation.

1 Comment

image: Many Evolutionary Paths Lead to Same Bird Trait

Many Evolutionary Paths Lead to Same Bird Trait

By | October 20, 2016

Diverse genetic changes lead to remarkably similar hemoglobin adaptations of diverse bird species, a study finds. 

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image: Using RNA to Amplify RNA

Using RNA to Amplify RNA

By | August 15, 2016

Researchers apply in vitro evolution to generate an RNA enzyme capable of copying and amplifying RNA.

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image: Parasite-Pathogen Partnership

Parasite-Pathogen Partnership

By | March 7, 2016

Parasitic mites that transmit a honey bee-infecting virus may benefit from spreading the pathogen, a study shows.

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image: Viral Remnants Help Regulate Human Immunity

Viral Remnants Help Regulate Human Immunity

By | March 3, 2016

Endogenous retroviruses in the human genome can regulate genes involved in innate immune responses.

2 Comments

image: Similar Data, Different Conclusions

Similar Data, Different Conclusions

By | February 23, 2016

By tweaking certain conditions of a long-running experiment on E. coli, scientists found that some bacteria could be prompted to express a mutant phenotype sooner, without the “generation of new genetic information.” The resulting debate—whether the data support evolutionary theory—is more about semantics than science.

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image: Borrowing Immunity Through Interbreeding

Borrowing Immunity Through Interbreeding

By | January 7, 2016

Neanderthals and Denisovans contributed innate immune genes to modern humans, scientists show.

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image: Rethinking the Rise of Mammals

Rethinking the Rise of Mammals

By | November 16, 2015

Mammals diversified 30 million years later than previously estimated, according to a new analysis of an ancient fossil.

3 Comments

image: Parasite’s Genes Persist in Host Genomes

Parasite’s Genes Persist in Host Genomes

By | September 17, 2015

Researchers find evidence of gene flow from parasitoid wasps to the butterflies and moths they lay eggs in.

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