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TagViruses (horizontal gene transfer)

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Flu. Influenza viruses with RNA, surface proteins hemagglutinin and neuraminidase,  medically 3D illustration

Astrobiologist: ET Viruses Likely Exist on Planets That Host Life

Paul Davies points to viruses as “mobile genetic elements” that transfer information between life forms — for better or worse

University of Arizona astrobiologist Paul Davies, author of many books, including the recent What’s Eating the Universe? (2021), told The Guardian, recently that if cellular life exists on other planets, something like viruses probably also exist — to transfer genetic information from one life form to another. Viruses, said Davies, can be thought of as mobile, genetic elements. Indeed, a number of studies have suggested genetic material from viruses has been incorporated into the genomes of humans and other animals by a process known as horizontal gene transfer. Nicola Davis, “Viruses may exist ‘elsewhere in the universe’, warns scientist” at The Guardian (September 6, 2021) Horizontal gene transfer, by which life forms “swap” genes, are common in bacteria and have…