Open AccessEffects of genetic and environmental factors on the a‐b, b‐c and c‐d interdigital ridge counts
Author(s) -
ARRIETA M. I.,
CRIADO B.,
HAUSPIE R.,
MARTINEZ B.,
LOBATO N.,
LOSTAO C. M.
Publication year - 1992
Publication title -
hereditas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 50
eISSN - 1601-5223
pISSN - 0018-0661
DOI - 10.1111/j.1601-5223.1992.tb00173.x
Subject(s) - varimax rotation , biology , ridge , statistics , mathematics , paleontology , cronbach's alpha , descriptive statistics
A study of 100 MZ (55 female and 45 male) and 97 DZ (50 male and 47 female) same‐sexed twin pairs was carried out to analyse the genetic component of the variance of the a‐b, b‐c and c‐d interdigital ridge counts by means of the Christian method. Especially for the a‐b interdigital ridge count, we found it important to analyse both sexes separately. Our results suggest that the a‐b count in males seems to be more influenced by environmental factors than the other counts. For females, the three interdigital counts seem to have a strong genetic component influencing their phenotypic expression. Factor analysis with VARIMAX rotation showed each interdigital ridge count to be genetically independent.