Inheritance of dermatoglyphic traits in twins

Dermatoglyphic traits in a sample of twins were analyzed to estimate the resemblance between MZ and DZ twins and to evaluate the mode of inheritance by using the maximum likelihood-based Variance decomposition analysis. The additive genetic variance component was significant in both sexes for four traits--PII, AB_RC, RC_HB, and ATD_L. AB RC and RC_HB had significant sex differences in means, whereas PII and ATD_L did not. The results of the Bivariate Variance decomposition analysis revealed that PII and RC_HB have a significant correlation in both genetic and residual components. Significant correlation in the additive genetic variance between AB_RC and ATD_L was observed. The same analysis only for the females sub-sample in the three traits RBL, RBR and AB_DIS shows that the additive genetic RBR component was significant and the AB_DIS sibling component was not significant while others cannot be constrained to zero. The additive variance for AB DIS sibling component was not significant. The three components additive, sibling and residual were significantly correlated between each pair of traits revealed by the Bivariate Variance decomposition analysis.

Additive genetic effects · Analysis of variance · Biology · Bivariate analysis · Correlation · Developmental psychology · Genetic correlation · Genetic variation · Heritability · Maximum likelihood · Multivariate statistics · One-way analysis of variance · Restricted maximum likelihood · Sibling · Statistics · Univariate · Variance (accounting) · Variance components · Dermatoglyphics and Human Traits · Genetics · Mathematics · Psychology

• The morphological diversity of dermatoglyphic patterns on fingers—A simple and objective method for measurement

  Open Access•Wiesław Buchwald•HOMO•2015

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