their nuclear genomes indicate more than 90% brown bear ancestry. MtDNA analysis revealed that brown bears are apparently divided into five different clades, some of which coexist or co-occur in different regions.

Evolution

The brown bear is one of eight extant species in the bear family Ursidae and of six extant species in the subfamily Ursinae.

The brown bear is thought to have evolved from the Etruscan bear

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