Red Vizcacha Rat

Red Vizcacha Rat

New analysis of rare Argentinian rat unlocks origin of the largest mammalian genome. New biological information gleaned from the red vizcacha rat, a native species of Argentina, demonstrates how genomes can rapidly change in size. Researchers set out to study this particular species because its genome, or its complete set of DNA, is the largest of all mammals, and appears to have increased in size very rapidly. Source 2a.