Inheritance of dermatoglyphic traits in twins: Univariate and bivariate variance decomposition analysis

Bibha Karmakar, Ida Malkin, Eugene Kobyliansky

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)221-228
Number of pages8
JournalAnthropologischer Anzeiger
Volume69
Issue number2
DOIs
StatePublished - 2012

Keywords

  • Biometric model
  • Dermatoglyphics
  • Segregation analysis
  • Twins

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