Abstract: This paper focuses on the comparison of gene frequencies of nine characters reported in the Buyei, Mulam and Maonan nationalities living in Guizhou. The results of this survey are summarized briefly as follows: 1) the dominant gene frequencies of these characters (piled-up tongue, forehead hair edge, hair whirl, cerumen, thumb type, middle finger hair, and ring and index finger length) were less than that of their recessive genes, but the opposite observation was true for two other characters (rolled-up tongue and little finger curve); 2) among the different nationalities, the difference in gene frequencies of rolled-up and piled-up tongue, forehead hair edge, cerumen, thumb type, and ring and index finger length was quite significant, followed by hair whirl, middle finger hair, and little finger curve.

Key words: Genetic character; Gene frequency; Buyei; Mulam; Maonan; Guizhou