Science & Technology
Prehistoric viruses still thrive within us
By
T.K. RandallApril 26, 2012 ·
15 comments
Image Credit: sxc.hu
Traces of ancient viruses from millions of years ago can still be found within our genetic material.
Scientists studied the genomes of several species to look for traces of these viruses, what they found was that many of them still thrived within modern species including humans. Some of the viruses had lost the ability to transfer from one cell to another and now lived out their entire lifecycle within a single cell.
"This is the story of an epidemic within every animal's genome, a story which has been going on for 100 million years and which continues today," said study author Dr Robert Belshaw. "We suspect that these viruses are forced to make a choice: either to keep their 'viral' essence and spread between animals and species. Or to commit to one genome and then spread massively within it."
Traces of ancient viruses which infected our ancestors millions of years ago are more widespread in us than previously thought. A study shows how extensively viruses from as far back as the dinosaur era still thrive in our genetic material.
Source:
BBC News |
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