Distribution of hypothenar radial arches.
A study of the frequency of the radial arch in the hypothenar area has confirmed that there are bimanual and sex differences, and has shown that racial differences in the frequency exist between Whites, Indians, Negros, and a Coloured (mixed racial origin) population. The pattern is not uncommon, and in about 25% of cases there is an associated marginal triradius.
D044383:Black People; D003433:Crosses, Genetic; D003878:Dermatoglyphics; D005260:Female; D006225:Hand; D006801:Humans; D008297:Male; D012737:Sex Factors; D044465:White People