Inheritance of finger pattern types in MZ and DZ twins.

Digital patterns of a sample on twins were analyzed to estimate the resemblance between monozygotic (MZ) and dizygotic (DZ) twins and to evaluate the mode of inheritance by the use of maximum likelihood based variance decomposition analysis. MZ twin resemblance of finger pattern types appears to be more pronounced than in DZ twins, which suggests the presence of genetic factors in the forming of fingertip patterns. The most parsimonious model shows twin resemblance in count of all three basic finger patterns on 10 fingers. It has significant dominant genetic variance component across all fingers. In the general model, the dominant genetic variance component proportion is similar for all fingertips (about 60%) and the sibling environmental variance is significantly nonzero, but the proportion between additive and dominant variance components was different. Application of genetic model fitting technique of segregation analyses clearly shows mode of inheritance. A dominant genetic variance component or a specific genetic system modifies the phenotypic expression of the fingertip patterns. The present study provided evidence of strong genetic component in finger pattern types and seems more informative compared to the earlier traditional method of correlation analysis.

Karmakar B ，Malkin I ，Kobyliansky E 《-》

Inheritance of dermatoglyphic asymmetry and diversity traits in twins based on factor: variance decomposition analysis.

Karmakar B ，Malkin I ，Kobyliansky E 《-》

Inheritance of 18 quantitative dermatoglyphic traits based on factors in MZ and DZ twins.

Karmakar B ，Malkin I ，Kobyliansky E 《-》

Genetic variance in age-related changes in running performance and growth during adolescence: a longitudinal twin study.

Watanabe T ，Mutoh Y ，Yamamoto Y 《-》

Thai Twin Registry: description of the initial stage.

Nanakorn S ，Chusilp K ，Kutanan W 《Twin Research and Human Genetics》