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Cloning Study Reveals Genetic Limits Over Generations

4/6/2026

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Story summary
  • The University of Yamanash conducted a long-term study, published in Nature Communications, showing that cloning cannot reproduce life indefinitely.
  • Cloned mice initially appeared healthy.
  • Survival declined across generations, culminating in no survivors by the 58th generation due to accumulating DNA errors.
  • Cloning uses older body cells that lack protective gamete mechanisms, exposing genetic flaws.
  • Despite its limitations, cloning remains valuable for agriculture and conservation.