摘要：Abstract Japanese macaques very often have a divided hypoglossal canal (DHC).Though not statistically significant, the incidence of DHC is lower in dental age class 2 than in other age classes, in males compared to females, and on right sides compared to left sides.The association between the right and left sides is extremely significant (chi-square=19.443), but the phi correlation coefficient (0.312) is not high, suggesting a low heritability estimate.It is suggested that a low heritability estimate within an individual population is not, in itself, an indicator of poor perfor-mance of the trait in population comparisons.
