Alaskan island cattle develop unique DNA from centuries of isolation

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A herd of cattle on Chirikof Island, Alaska, has developed a distinctive genetic makeup unlike most US breeds. The animals carry a rare blend of Yakut and Hereford genetics, shaped by generations of living in a remote, harsh environment. Their prolonged isolation has driven the emergence of unique adaptive traits not commonly seen in mainland cattle populations. Scientists say the herd offers valuable insights into how isolated animal populations evolve and adapt over time.

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