Assertion: brown bear's number | /r/HasProperty | explained by the fusing of some chromosomes
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Source sentences:
text: These smaller numbers can be explained by the fusing of some chromosomes, and the banding patterns on these match those of the ursine species, but differ from those of procyonids, which supports the inclusion of these two species in Ursidae rather than in Procyonidae, where they had been placed by some earlier authorities.