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Scientists found ancient RNA in 39,000-year-old mammoth Yuka, revealing stress and muscle activity before death.
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.
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.
Genetic analysis confirmed Yuka was male.
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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Los científicos encontraron un antiguo ARN en el mamut Yuka de 39.000 años de edad, revelando estrés y actividad muscular antes de la muerte.