Biochemical Variation in the Black Bear

January 1, 1980

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A total of 35 presumably distinct biochemical loci were analyzed in black bears (Ursus americanus) from Alaska, California, Maine, Montana, Tennessee, and Virginia by using starch-gel electrophoresis. Limited spatial subdivision of gene frequency was observed in Tennessee. Overall heterozygosity levels are lower in black bears than would generally be expected for mammalian species. Levels of interpopulation genetic similarity are extremely high for a species with such wide distribution, in contrast to the observed morphological variation.

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