Sent_en: 2zh Ten Irish brown bears from between 10,000 and 38,000 years ago carried a distinct sequence of mitochondrial DNA, originating from a specific female brown bear, and this DNA sequence has been passed down the female polar bear line and is found in all polar bears today.
Sent_yy: 10000年到38000年前的十只爱尔兰棕熊携带着一组独特的线粒体DNA序列，它们来自于一只特定的雌性棕熊，而这组DNA序列已经被传递到雌性北极熊的后代中，并且在今天所有的北极熊身上都能找到。