title: Effects of genetic and environmental factors on the a-b, b-c and c-d interdigital ridge counts.
abstract: 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.
authors.affiliation: Dpto Biología Animal y Genética, Facultad de Ciencias, Universidad del Pais Vasco, Bilbao, Spain.
authors.forename: M I
authors.initials: MI
authors.lastname: Arrieta
authors.forename: B
authors.initials: B
authors.lastname: Criado
authors.forename: R
authors.initials: R
authors.lastname: Hauspie
authors.forename: B
authors.initials: B
authors.lastname: Martinez
authors.forename: N
authors.initials: N
authors.lastname: Lobato
authors.forename: C M
authors.initials: CM
authors.lastname: Lostao
mesh_terms: D003878:Dermatoglyphics; D004777:Environment; D005163:Factor Analysis, Statistical; D005260:Female; D014644:Genetic Variation; D006801:Humans; D008297:Male; D014429:Twins, Dizygotic / Q000235:genetics; D014430:Twins, Monozygotic / Q000235:genetics