Fragments of DNA left by viruses that infected our distant ancestors may be 'firestarters' for new human life, new research finds. "Our results illustrate how recently emerged… genes can confer developmentally essential functions in humans," Stanford University biologist Raquel Fueyo and colleagues write in their paper. Fueyo and her team used a ball of stem cells induced to mimic a blastocyst , the phase of embryonic development about five days after fertilization . This 3D model , or blastoid,

Tag-uri: DNA