Scientists have uncovered clues as to how our genomes became riddled with viruses. The study, supported by the Wellcome Trust, reveals important information about the so–called 'dark matter' of our genome.For years scientists have been struggling with the enigma that more than 90 percent of every mammal's genome
has no known function. A part of this 'dark matter' of genetic material
is known to harbour pieces of DNA from ancient viruses that infected
our ancestors going back as far as the age of the dinosaurs.
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