趾指紋紋型頻度の変異

特に紋型頻度の性差及び側差の趾指紋間に於ける関連性について

抄録

It is well known that pattern expressions are different in toe and finger prints, that there are sexual and bilateral distinctions in toe and finger prints and that both pattern frequencies and distributions of individual toe or finger are subject to sexual and bilateral distinctions.
A study is made of the pattern expressions in toe and finger prints in the same individual in reference to the variations in sexual and bilateral distinctions.
The persons examined are 6, 183 males and 6, 317 females, 12, 500 in total. The results of the study are as follows :
(1) Sexual differences of pattern expressions in toe and finger prints are shown in series, i, e., toes on the left : toes on the right : fingers on the left : fingers on the right. The pattern expressions change with a gradient demonstrating a contrast between the left toe side and the right finger side.
(2) Bilateral differences of pattern expressions in toe and finger prints are shown in series, i, e., toes in the female : toes in the male : fingers in the female : fingers in the male. The pattern expressions change with a gradient demonstrating a contrast between female toes and male fingers.
(3) With regard to the pattern, marked variations are observed in the sexual differences of fingers on the right, and in bilateral differences of male fingers. It is revealed that sexual and bilateral differences are simpler in toes than in fingers.
(4) The finding that the sexual and bilateral differences of toe and finger pattern expressions follow the above mentioned difinite series seems to indicate the presence of a noticeable feature of apical pattern in toes and fingers.