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Bits of viral genes incorporated into human DNA have been linked to cancer, ALS and schizophrenia. But many of these genes may not be harmful, and could even protect against infectious disease.
An ancient viral infection may have given animals the tools to become fast, coordinated and smart, a study has found. According to a paper published Thursday in Cell, complex nervous systems arose in the distant past after viruses inserted bits of code into the genomes of vertebrates — animals with a spinal cord, from humans…
Ancient viruses that infected vertebrates hundreds of millions of years ago played a pivotal role in the evolution of our advanced brains and large bodies, a study said Thursday. This led them to believe the sequence appeared in the tree of life around the same time as jaws, which first evolved around 360 million years ago in the Devonian period, called the Age of Fishes.
Viruses that became trapped in frozen earth thousands of years ago would be released as rising temperatures cause the soil to thaw, scientists say.
The effects of disturbing millennia-old viruses could be ‘calamitous’, scientists warn