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flag Scientists found ancient RNA in 39,000-year-old mammoth Yuka, revealing stress and muscle activity before death.

flag Scientists have extracted ancient RNA from Yuka, a 39,000-year-old juvenile woolly mammoth found in Siberian permafrost, marking a major breakthrough in paleogenetics. flag The preserved RNA, which reflects real-time gene activity, revealed signs of stress and slow-twitch muscle function, possibly linked to a predator attack or struggle. flag Genetic analysis confirmed Yuka was male. flag Though most RNA was too fragmented to interpret fully, the findings demonstrate that ancient RNA can survive for tens of thousands of years under frozen conditions, offering rare insights into the physiology and final moments of extinct animals.

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