Evolution of a fatal chicken virus tracked with help ancient bones

1000-year DNA shows how the chicken virus evolved and became more killing. Research is published in the Science magazine. The international group of geneticists and biologists used ancient DNA to track long evolution of a virus of an illness of Marek deadly to not imparted hens (MDV). Comparing the virus genomes received both from modern, and from ancient birds, scientists defined the genetic changes responsible for the raised virulentnost of modern strains. Researchers analysed DNA allocated from chicken bones which found in the territory 140...