Premium
The inheritance of palmar and hallucal dermatoglyphic patterns in fifty‐four American Caucasian families
Author(s) -
Morgan Leslie Y.,
Juberg Richard C.,
Faust Charles C.
Publication year - 1978
Publication title -
american journal of physical anthropology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 119
eISSN - 1096-8644
pISSN - 0002-9483
DOI - 10.1002/ajpa.1330490403
Subject(s) - dermatoglyphics , offspring , biology , anatomy , genetics , pregnancy
Abstract We searched for single gene effects determining certain palmar and plantar patterns — two interdigital and the hypothenar areas, palmar main line sequence, and hallucal pattern. Our subjects were 108 parents from central Louisiana and 123 of their offspring; there were 127 females and 104 males. For the third and fourth interdigital areas, we classified for presence of a pattern (+) or no pattern (−). For the hypothenar area, we classified arch, anteform, and open field as no pattern (−) and other configurations as a pattern (+). Main line sequence we determined by the distal to proximal ordering of the five main lines. We analyzed the hallucal area by combining three loop patterns. Segregational analyses followed. For the third interdigital area, the frequency of + was 51%. For the fourth interdigital area, the frequency of + was 51%. In the hypothenar area, the frequency of + was 45%. We set out the six mating types by the bilateral occurrence of pattern in each area and found similar results. The proportion of + + offspring was highest with both + + parents and diminished as the parents became increasingly more − −. Evidence for genetic determination of six different main line sequences consisted of the proportion of related/(related + unrelated) which averaged 0.48. Parent‐offspring occurrence of an accessory triradius and absence of the c triradius suggested monogenic control. Segregation of the hallucal patterns was less suggestive. We conclude that the results offer evidence for substantial genetic determination of palmar dermatoglyphics, and for some patterns possible monogenic determination.