In the ML analysis of combined data, the lineage (brown bear/polar bear) was more closely related to American black bear than was Asiatic black bear, however, there was low bootstrap support for this relationship.

• 合并数据集的系统发育分析表明棕熊和北极熊与美洲黑熊的关系最近，而不是亚洲黑熊，但是支持率不高。