Girl mice grew balls after a one-letter DNA change

Swap one letter in a girl mouse's DNA and she grows testes. Researchers at Bar-Ilan University in Israel edited a small stretch of what scientists used to call "junk DNA," the vast majority of the genome that doesn't build proteins but tells other genes when to turn on or off. — Read the rest The post Girl mice grew balls after a one-letter DNA change appeared first on Boing Boing.