Dermatoglyphic fluctuating asymmetry in twins and singletons
نویسندگان
چکیده
منابع مشابه
Fluctuating dermatoglyphic asymmetry in psychotic twins.
Fluctuating asymmetry of bilateral morphological traits is the result of prenatal developmental instability and has been shown to be greater in organisms having more homozygous genotypes (aabb vs. AaBb, for example). This expected increase in fluctuating asymmetry has been found among individuals having a high degree of liability for schizophrenia, as this disorder appears to have a polygenic b...
متن کاملFluctuating dermatoglyphic asymmetry and the genetics of liability to schizophrenia.
Schizophrenic subjects were compared to normal and psychiatric control subjects for degree of fluctuating asymmetry in two dermatoglyphic traits, a-b ridge count and fingertip pattern. The schizophrenic group exhibited significantly greater fluctuating asymmetry than either control group. Furthermore, indicators of disease severity such as early onset and declining course of illness correlated ...
متن کاملDermatoglyphic Fluctuating Asymmetry and Symmetry in Familial and Non Familial Schizophrenia
Three dermatoglyphic traits, viz; finger patterns, finger ridge counts, and palmer a-b ridge counts of 57 (M-29; F-28) and 64 (M-29; F-35). Schizophrenics with and without positive family history respectively, and 65 controls (M-30, F-35), were analysed to determine their level of fluctuating asymmetry.Uniformly higher fluctuating asymmetry was observed in the loop ridge counts of second digits...
متن کاملInheritance of dermatoglyphic asymmetry and diversity traits in twins based on factor: variance decomposition analysis.
Dermatoglyphic asymmetry and diversity traits from a large number of twins (MZ and DZ) were analyzed based on principal factors to evaluate genetic effects and common familial environmental influences on twin data by the use of maximum likelihood-based Variance decomposition analysis. Sample consists of monozygotic (MZ) twins of two sexes (102 male pairs and 138 female pairs) and 120 pairs of d...
متن کاملBritishJournalof Psychiatry(1992),160,467—472 Dermatoglyphic Evidence of Fluctuating Asymmetry in Schizophrenia
Fluctuatingasymmetry provides a measure of an organism's capacity to buffer adverse factors that coulddisturbitsdevelopment.It isestimatedfromthe differencesbetweentheoretically identicalrightand left-sidedstructures. Dermatoglyphicfluctuating asymmetryhas been recently used to investigate developmental disorders. Fingerprintsand palm prints of schizophrenic patients, which had been the subject...
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ژورنال
عنوان ژورنال: Hereditas
سال: 2008
ISSN: 0018-0661
DOI: 10.1111/j.1601-5223.1989.tb00783.x