科学家在39 000岁的长毛象尤卡发现了古代RNA,暴露出死亡前的压力和肌肉活动。 Scientists found ancient RNA in 39,000-year-old mammoth Yuka, revealing stress and muscle activity before death.

科学家们从Yuka提取了古老的RNA,Yuka是一个在西伯利亚永久冻土发现的39 000岁少年羊毛长毛猛毛象,标志着古代遗传学的重大突破。 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. 保存的RNA反映了实时基因活动,它揭示出压力和缓慢抽动肌肉功能的迹象,可能与掠食者攻击或挣扎有关。 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. 遗传分析证实Yuka是男性。 Genetic analysis confirmed Yuka was male. 虽然大多数RNA过于分散,无法充分解释,但调查结果显示,古代RNA可以在冻结的条件下生存数万年,对灭绝动物的生理和最后时刻难得有洞察力。 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.