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  "path": "/2026/04/10/girl-mice-grew-balls-after-a-one-letter-dna-change.html",
  "publishedAt": "2026-04-10T18:59:51.000Z",
  "site": "https://boingboing.net",
  "tags": [
    "Post",
    "Bar-Ilan University",
    "biology",
    "dna",
    "genetics",
    "mice",
    "Nature Communications",
    "Science",
    "sex development",
    "Read the rest",
    "Girl mice grew balls after a one-letter DNA change",
    "Boing Boing"
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  "textContent": "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 \n\nThe post Girl mice grew balls after a one-letter DNA change appeared first on Boing Boing.",
  "title": "Girl mice grew balls after a one-letter DNA change"
}