Sent_en: 2zh A member of the international team conducting the study, Dr Ceiridwen Edwards from Oxford University, said: "Hybridisation between ancient Irish brown bears and polar bears has led to the complete replacement of the original polar bear mitochondria.
Sent_yy: 牛津大学的希里德温·爱德华兹博士是这项研究的国际小组成员，他说：“古老的爱尔兰棕熊和北极熊的杂交已经完全取代了最初的北极熊线粒体。